Develco Products - White label products for security, home care, and energy management.
User Manual for DEVELCO models including: WISZB 120 Window Sensor, WISZB 120, Window Sensor, Sensor
Magnetkontakt WISZB-120 - Develco - Köp av Criseq
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DocumentDocumentWindow Sensor - WISZB-120 Technical manual Revised 21.03.2016 Window Sensor - WIS-120 Technical manual Content 1 Cautionary notes ......................................................................................................................................................................................................................5 2 Features ........................................................................................................................................................................................................................................ 6 2.1 Window Sensor - WISZB-120 .................................................................................................................................................................................... 6 2.2 IAS Zone ................................................................................................................................................................................................................................... 6 2.3 Temperature ......................................................................................................................................................................................................................... 6 2.4 Key features .......................................................................................................................................................................................................................... 6 3 Endpoints ......................................................................................................................................................................................................................................7 3.1 ZigBee Device Object (ZDO)........................................................................................................................................................................................7 3.2 IAS Zone....................................................................................................................................................................................................................................7 3.3 Temperature Sensor.........................................................................................................................................................................................................7 3.4 Develco Utility.......................................................................................................................................................................................................................7 4 Supported Clusters ............................................................................................................................................................................................................... 8 4.1 Common clusters for each end point .................................................................................................................................................................. 8 4.1.1 Basic Cluster id 0x0000 .................................................................................................................................................................................. 8 4.1.1.1 Attribute................................................................................................................................................................................................................... 8 4.1.2 Identify Cluster id 0x0003.............................................................................................................................................................................. 8 4.1.2.1 Attribute................................................................................................................................................................................................................... 8 4.1.2.2 Commands..............................................................................................................................................................................................................9 4.2 IAS Zone Device EP 0x23...........................................................................................................................................................................................9 4.2.1 IAS Zone - Cluster id 0x0500 ............................................................................................................................................................................9 4.2.1.1 Attribute....................................................................................................................................................................................................................9 4.2.1.2 Commands........................................................................................................................................................................................................... 10 4.2.2 Power Configuration - Cluster id 0x0001................................................................................................................................................11 4.2.2.1 Attribute..................................................................................................................................................................................................................11 4.2.3 Poll Control - Cluster id 0x0020....................................................................................................................................................................11 4.2.3.1 Attribute..................................................................................................................................................................................................................11 4.2.4 OTA Upgrade Cluster id 0x0019...............................................................................................................................................................12 4.2.4.1 Attributes ...............................................................................................................................................................................................................12 4.2.4.2 Commands............................................................................................................................................................................................................12 Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 2 Window Sensor - WIS-120 Technical manual 4.2.4.3 OTA Upgrade Messages Diagram ........................................................................................................................................................13 4.2.5 Time Cluster id 0x000A................................................................................................................................................................................. 14 4.2.5.1 Attribute................................................................................................................................................................................................................. 14 4.3 Temperature Sensor Device EP 0x26 ............................................................................................................................................................ 14 4.3.1 Temperature Measurement Cluster id 0x0402 ............................................................................................................................. 14 4.3.1.1 Attribute................................................................................................................................................................................................................. 14 5 MMI user guide....................................................................................................................................................................................................................... 16 5.1 Push Button Menu........................................................................................................................................................................................................... 16 5.1.1 EZ mode - Initiator................................................................................................................................................................................................. 16 5.1.2 EZ mode - Target....................................................................................................................................................................................................17 5.1.3 Factory reset ..............................................................................................................................................................................................................17 5.2 Action on Power On.........................................................................................................................................................................................................17 6 General network behaviour ........................................................................................................................................................................................... 18 6.1 Installation ............................................................................................................................................................................................................................ 18 6.2 Normal Keep alive....................................................................................................................................................................................................... 18 6.2.1 Network lost .............................................................................................................................................................................................................. 18 6.3 Low battery.......................................................................................................................................................................................................................... 19 7 Specifications ..........................................................................................................................................................................................................................20 8 Contact Information .............................................................................................................................................................................................................21 Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 3 Window Sensor - WIS-120 Technical manual Copyright © Develco Products A/S All rights reserved. Develco Products assumes no responsibility for any errors, which may appear in this manual. Furthermore, Develco Products reserves the right to alter the hardware, software, and/or specifications detailed herein at any time without notice, and Develco Products does not make any commitment to update the information contained herein. All the trademarks listed herein are owned by their respective owners. RoHS Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 4 Window Sensor - WIS-120 Technical manual 1 Cautionary notes Develco Products A/S reserves the right to make changes to any product to improve reliability without further notice. Develco Products A/S does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under patent rights or the rights of third parties. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 5 Window Sensor - WIS-120 Technical manual 2 Features 2.1 Window Sensor - WISZB-120 The Window Sensor enables you to detect whether windows or doors are closed or open. When the sensor part and the magnet part is separated the alarm is activated. It protects your home and gives an alert when unexpected action is occurred. The Window Sensor also includes temperature measuring functionality. The sensor is battery powered and is easily mounted by the included screws or double-stick tape. The sensor has two ZigBee end points, one for the magnetic sensor and one for temperature. 2.2 IAS Zone The Window Sensor is implemented as a IAS Zone ZigBee end point according to ZigBee Home Automation profile ,,IAS Zone". 2.3 Temperature The temperature sensor measures temperature with a resolution of 0.1°C. It supports standard ZigBee reporting (on change or interval). The end point is configured as the Home Automation profile "Temperature Sensor`` 2.4 Key features Key features are: Alarm sensor IAS Zone Temperature sensor ZigBee OTA cluster for firmware upgrades ZigBee HA 1.2 Certified application profile ZigBee PRO is supported RoHS compliant according to the EU Directive 2002/95/EC Standard ZigBee Home Automation security and stack settings are used Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 6 Window Sensor - WIS-120 Technical manual 3 Endpoints The device implements the following standard HA devices on different end points. 3.1 ZigBee Device Object (ZDO) End point number 0x00 Application profile Id 0x0000 Application device Id 0x0000 Supports all mandatory clusters 3.2 IAS Zone End point number 0x23 Application profile Id 0x0104 (Home Automation) Application device Id 0x0402 3.3 Temperature Sensor End point number 0x26 Application profile Id 0x0104 (Home Automation) Application device Id 0x0302 3.4 Develco Utility Application profile Id 0xC0C9 (Develco Products private profile) Application device Id 0x0001 Manufactor code for Develco Products is 0x1015 Private profile for internal Develco Products use only. Reference documents: 053474r18ZB_CSG-ZigBee-Specification.pdf 075123r03ZB_AFG-ZigBee_Cluster_Library_Specification.pdf 053520r27ZB_HA_PTG-Home-Automation-Profile.pdf 075356r15ZB_ZSE-ZSE-AMI_Profile_Specification.pdf They can all be downloaded from : http://www.zigbee.org/Products/DownloadZigBeeTechnicalDocuments.aspx Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 7 Window Sensor - WIS-120 Technical manual 4 Supported Clusters 4.1 Common clusters for each end point The ZCL "General Function Domain" clusters in this section are implemented as server clusters. Refer to ZigBee Cluster Library Specification. http://www.zigbee.org/Specifications.aspx 4.1.1 Basic Cluster id 0x0000 Only the first set has mandatory attributes, also the optional attributes that can be relevant to a Develco device are all in set 0x000. 4.1.1.1 Attribute Id# Name 0x0 ZCLVersion 0x4 ManufacturerName 0x5 ModelIdentifier 0x6 DateCode 0x7 PowerSource Type Uint8 String String String 8 bit enum Range Type range 0-32 byte 0-32 byte 0-32 byte Type range Man/Opt M O O O M Relevance and ref. 4.1.1.1.1 4.1.1.1.2 4.1.1.1.1 ManufacturerName "Develco Products A/S" 4.1.1.1.2 ModelIdentifier "WISZB-120" 4.1.1.1.3 Manufacture Specific Attribute Id# 0x8000 Name PrimarySwVersion Type OctetString Range Man/Opt M Relevance and ref. SW version ZCL header setting Manufacture code for Develco Products is 0x1015 4.1.2 Identify Cluster id 0x0003 4.1.2.1 Attribute Id# 0x0000 Name IdentifyTime Type Uint16 Range Type range Man/Opt M Relevance and ref. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 8 Window Sensor - WIS-120 Technical manual 4.1.2.2 Commands The identify cluster has 2 commands as server. Id# 0x00 0x01 Name Identify Identify Query Payload Uint16 - Identify Time (seconds) none Man/Opt M M Relevance and ref. 0x00 0x01 The identify cluster has 1 command as client. Id# Name Payload 0x00 Identify Query Response Uint16 - Identify Time (seconds) Man/Opt M Relevance and ref. 0x00 4.2 IAS Zone Device EP 0x23 4.2.1 IAS Zone - Cluster id 0x0500 The IAS Zone cluster is described in ZigBee Cluster Library Specification. 4.2.1.1 Attribute Id# Name 0x0000 Zone State 0x0001 Zone Type 0x0002 Zone Status 0x0010 0x0011 IAS CIE Address ZoneID Type 8-bit Enumeration 16-bit Enumeration Man/Opt M M Uint16 M Valid 64-bit M IEEE address Uint8 M Relevance and ref. Hard coded to 0x0015 Contact Switch The following bits are supported: Bit0: Alarm 1 Bit2: Tamper Bit3: Battery Bit4: Supervision reports Bit5: Restore reports 4.2.1.1.1 Zone State The device will automatically start to scan the network for an IAS Zone client in a predefine interval. When the client is found it will automatically attempt to enrol. When it has successfully enrolled the Zone Status command is send every 5 minutes. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 9 Window Sensor - WIS-120 Technical manual The attribute value will change from not enrolled (0x00) to Enrolled (0x01). 4.2.1.1.2 IAS CIE Address Attribute specifies the address that commands generated by the server shall be sent to. To un-enrol the device the back end system has to write a new address into this attribute. Any value is valid. If the back end system writes an IEEE address then it will try to enrol to this devices represented by the IEEE address. 4.2.1.1.3 ZoneID A unique reference number allocated by the CIE at zone enrolment time. Used by IAS devices to reference specific zones when communicating with the CIE. The ZoneID of each zone stays fixed until that zone is un-enrolled. 4.2.1.2 Commands The IAS Zone cluster has 2 commands as server. Id# Name Payload Man/Opt Zone Status Change 0x00 Uint16 bit mask M Notification 0x01 Zone Enroll Request Bits 16 16 Data type 16 bit enum UINT16 M Field Zone Manufacturer name type code Relevance and ref. The status is report to the coordinator every 5 min I nit sequence when the device has j oin the network it start to scan for an I AS zone client cluster. I f a client is found a Zone enroll request com m and is send and a Zone Enroll response is expect ed. I f it doesn't receive a response within 15 sec it gives up and will continue to scan x num ber of attem pts. When the init sequence is over it will enter a state where it scans for a client every 12 hour. The following bit s are support ed in Zone st at us: Bit0: Alarm 1 Bit2: Tamper Bit3: Battery Bit4: Supervision reports Bit5: Restore reports When the battery is below 2.2 VDC Bit3: Battery is set high and "Zone Status" is transmitted to the coordinator. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 10 Window Sensor - WIS-120 Technical manual 4.2.2 Power Configuration - Cluster id 0x0001 The power configuration cluster is described in ZigBee Cluster Library Specification section 4.8 4.2.2.1 Attribute Id# Name 0x0020 BatteryVoltage Type Uint8 Range 0x00 - 0xFF Man/Opt O Relevance and ref. Note: The attribute "BatteryVoltage" is measuring the battery voltage, in units of 100mV. 4.2.3 Poll Control - Cluster id 0x0020 The poll control cluster is described in ZigBee Cluster Library Specification This cluster provides a mechanism for the management of an end device's MAC Data Request rate. For the purposes of this cluster, the term "poll" always refers to the sending of a MAC Data Request from the end device to the end device's parent. This cluster can be used for instance by a configuration device to make an end device responsive for a certain period of time so that the device can be managed by the controller. 4.2.3.1 Attribute Id# 0x0000 0x0001 Name Check-inInterval LongPoll Interval 0x0002 ShortPollInterval 0x0003 FastPollTimeout Type Uint32 Uint32 Uint16 Uint16 Range Man/Opt 0x00 - 0xFF M M M M Relevance and ref. Default value is 1 hour Default value is disabled Default value is 3 seconds Default value is 5 minutes Start up, auto scan for client poll control cluster on the coordinator. If it is support on the coordinator an auto bind is created and the smoke sensor will send a check-in command in the interval specified in attribute "CheckinInterval. The coordinator has to reply with a check-in response. The sensor supports the following commands send from the client (Typically the coordinator). 0x00 Check-in Response, 0x01 Fast Poll Stop, 0x02 Set Long Poll Interval, 0x03 Set Short Poll Interval, If it doesn't find a poll client it will search again periodically. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 11 Window Sensor - WIS-120 Technical manual 4.2.4 OTA Upgrade Cluster id 0x0019 The cluster provides a ZigBee standard way to upgrade devices in the network via OTA messages. The devices support the client side of the cluster. When the devices has joined a network it will automatically auto scan for a OTA upgrade server in the network. If it finds a server an auto bind is created and ones every 24 hour it will automatically send its "current file version" to the OTA upgrade server. It is the server that initiate the firmware upgrade process. 4.2.4.1 Attributes Id# 0x0000 0x0001 0x0002 0x0003 0x0004 0x0005 0x0006 0x0007 0x0008 0x0009 Name UpgradeServerID FileOffset CurrentFileVersion CurrentZigBeeStackVersion DownloadedFileVersion DownloadedZigBeeStackVersion ImageUpgradeStatus Manufacturer ID Image Type ID MinimumBlockRequestDelay Type IEEE Address Uint32 Uint32 Uint16 Uint32 Uint16 8 bit enum Uint16 Uint16 Uint16 Range - Man/Opt M Relevance and ref. Type range O Type range O Type range O Type range O Type range M 0x00 to 0xFF O Type range O Type range O Type range O Above attribute description is to be found in section 6.7 "OTA Cluster Attributes" in ZigBee document "zigbeeota-upgrade-cluster-specification" provided by the ZigBee alliance. 4.2.4.2 Commands The OTA Client cluster can send the following commands Id# 0x01 0x03 0x06 Name Query Next Image request Image Block Request Upgrade End Request Man/Op t M M M Relevance and ref. 6.10.1 OTA Cluster Identifiers 6.10.1 OTA Cluster Identifiers 6.10.1 OTA Cluster Identifiers Command Command Command Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 12 4.2.4.3 OTA Upgrade Messages Diagram Window Sensor - WIS-120 Technical manual Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 13 Window Sensor - WIS-120 Technical manual 4.2.5 Time Cluster id 0x000A The Time cluster is a general cluster for time it is based on a UTC time in seconds since 0 hrs 0 mins 0 sec on 1st January 2000. Refer to [Z2] for ZigBee specification of the time cluster. The device will use this clusters as a client provided that a suitable Time Server is available on the network (most likely on the Gateway). 4.2.5.1 Attribute Id# 0x0000 Name Time 0x0001 TimeStatus type UTCTime (Uint32) Range Type range Man/Opt M 8 bit bitmap 00000xxx M Relevance and ref. The module will periodically update its clock by synchronizing through this cluster 4.3 Temperature Sensor Device EP 0x26 The ZCL "Measurement and Sensing" cluster in this section is implemented as a server cluster. Refer to ZigBee Cluster Library Specification. 4.3.1 Temperature Measurement Cluster id 0x0402 The temperature measurement cluster is described in ZigBee Cluster Library Specification section 4.4. 4.3.1.1 Attribute Id# Name 0x0000 MeasuredValue 0x0001 0x0002 MinMeasuredValue MaxMeasuredValue type Sint16 Sint16 Sint16 Range MinValue to MaxValue 0 5000 Man/Opt M M M Relevance and ref. ZCL Reporting is support DP default is configured 4.3.1.1.1 MeasuredValue The attribute is configured with the following default "ZCL configure reporting" setting. Min Reporting Interval: 0x003C [60 sec] Max Reporting Interval: 0x0258 [600 sec] Reportable Change: 0x000A [0.1 °C] If the temperature value is stable it will be send every 10 minutes. If the temperature changes more than 0.1 °C it will be reported but not faster than every 1 minute since last reporting value. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 14 Window Sensor - WIS-120 Technical manual Note: Min reporting interval 0 sec is invalid when reportable change is configured. 4.3.1.1.2 MinMeasuredValue The temperature sensor is NOT supporting temperature measurements below 0 degrees Celsius. 4.3.1.1.3 MaxMeasuredValue The temperature sensor is NOT supporting temperature measurements above 50 degrees Celsius. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 15 Window Sensor - WIS-120 Technical manual 5 MMI user guide 5.1 Push Button Menu Pushing the button on a device provides the user with several possibilities. Pushing the button for longer (push, hold for a few seconds, and release) allows the user to set the device into a desired mode. A mode change happens at 5 second interval. Below, these modes are illustrated in a state chart. When cycling through the menu modes, the state is indicated by a number of 100ms blinks on the LED. The device is supporting the ZigBee standardized EZ- mode Commissioning. 5.1.1 EZ mode - Initiator If the devices is not on the network EZ-Mode Network Steering is invoked when the user enter this menu. The led blinks once every 1 sec until the devices has joined the network. If the device was already on the network it will broadcast the PermitJoin messages. It is the trust center policy that decides if the device is allowed to join the network. When the device has joined the network EZ-Mode Finding and Binding is invoked and the device start to blink every 3 sec until a cluster match is found. When a match is found or the cluster examine is finished the blinking stops and the device sends a messages to the target device to stop the identify time. The following clusters are support in EZ-mode finding and binding: Temperature cluster Power configuration cluster Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 16 Window Sensor - WIS-120 Technical manual The EZ-mode time is hard coded to 3 minutes. This is the Minimum and recommended PermitJoin time broadcast for EZ-Mode Network Steering and minimum IdentifyTime set for EZ-Mode Finding and Binding. If the user enters the menu again another 3 minutes is started. 5.1.2 EZ mode - Target If the devices is not on the network EZ-Mode Network Steering is invoked when the user enter this menu. The led blinks twice every 1 sec until the devices has joined the network. If the device was already on the network it will broadcast the PermitJoin messages. It is the trust center policy that decides if the device is allowed to join the network. When the device has joined the network identify mode is invoke and the device start to blink twice every 3 sec until identify mode is stopped or after the EZ-mode time has expired. If the user enters the menu again another 3 minutes is started. 5.1.3 Factory reset To allow a device to join a network, one either has to power up a device that has not previously joined a network or push the button until the Reset To Factory default mode is indicated and subsequently release the button. This will cause the device to reset to its factory default state and scan for a suitable coordinator. 5.2 Action on Power On As a general rule, all end devices and routers that have not previously joined a network (or have been reset to factory default) will start up and search for a network with join permit open. In this mode, the LED will flash once every second. Once the device has joined the network, is will start scanning for an OTA server, Time server, Poll control client and an IAS Zone client. If a device has joined a network and is powered down, it will attempt to rejoin this network upon power up. For the first 30 seconds hereafter, the device will be available for communication. This time can be expanded using the poll control cluster functionality. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 17 Window Sensor - WIS-120 Technical manual 6 General network behaviour 6.1 Installation When the device is virgin and powered for the first time it will start looking for a ZigBee PAN Coordinator or router to join. The device will scan each ZigBee channel starting from 11 to 24. The LED will flash once every second until it joins a device. #Scan mode - 1 Scan all 16 ZigBee channel until join network or 15 minutes #Sleep mode MCU is in sleep mode (Radio off) 15 minutes #Scan mode - 2 Scan all 16 ZigBee ch x 4 or until join network ~ 30 seconds #Sleep mode MCU is in sleep mode (Radio off) 15 minutes #Scan mode - 2 Scan all 16 ZigBee ch x 4 or until join network ~ 30 seconds The device will start up using scan mode 1. To increase battery lifetime when the device is joining a network for the first time a scan mode 2 will be used after scan mode 1 has expired. Scan mode 1 it will only be executed one time when the device is powered. If the user invokes EZ-mode it will start scanning the next 3 minutes In section 5 "MMI" it is explained how to put the device into a join or leave network mode. Network settings are stored in NV-memory are after a power cycle the device re-join the same network. If the device has to join a new PAN coordinator the MMI menu supports a "Reset To Factory Fresh Settings" mode. This will erase all current network information. 6.2 Normal Keep alive The device is sending a "keep alive" message to the PAN coordinator every 15 minute to verify that the device is still connected to the network. 6.2.1 Network lost If no "keep alive" responses are received 5 times in a row (Worst case 1h15m), the devices will start scanning as specified in the table below. When the device is in scan mode the LED will flash once every second until it re-joins the network. According to the ZigBee specification TX is NOT allowed to be enabled all the time and a TX silent period has to be defined. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 18 Window Sensor - WIS-120 Technical manual #Scan mode - 1 Scan current ch 3 times Scan remaining 15 ch 1 time Scan all 16 ch 3 times #Sleep mode MCU is in sleep mode (Radio off) 15 minutes #Scan mode - 2 Scan current ch 3 times Scan remaining 15 ch 1 time #Sleep mode MCU is in sleep mode (Radio off) 15 minutes #Scan mode - 2 Scan current ch 3 times Scan remaining 15 ch 1 time 6.3 Low battery The current battery voltage can be read from the power configuration cluster described in section 4.3.1. The attribute "BatteryVoltage" is measuring the battery voltage, in units of 100mV. Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 19 Window Sensor - WIS-120 Technical manual 7 Specifications General Dimensions (L x B x H) Colour Battery Battery life Radio Environment Function Temperature sensor Detection Communication Wireless protocol Certifications 65 x 25 x 17 mm (Sensor part) and 65 x 17 x 17 (magnet part) White and light grey Battery: 2 x AAA, exchangeable Battery life: up to 2 years, 2 minutes reporting Sensitivity: -92 dBm Output power: +3 dBm IP class: IP40 Operation temperature 0 to +50°C Range: 0 to +50°C Resolution: 0.1°C (accuracy ± 0.5°C) Sample time: config.: 2 s -65.000 s Reporting: configurable Magnetic: 0.1-1.0 cm ZigBee Home Automation compliant ZigBee end-device RoHS compliant according to the EU Directive 2002/95/EC Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 20 Window Sensor - WIS-120 Technical manual 8 Contact Information Technical support: Sales: Please contact Develco Products for support. products@develcoproducts.com Please contact Develco Products for information on prices, availability, and lead time. info@develcoproducts.com Develco Products A/S Olof Palmes Allé 40 DK-8200 Aarhus N http://develcoproducts.com info@develcoproducts.com 21