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User Manual for netvox models including: R720E Wireless TVOC Detection Sensor, R720E, Wireless TVOC Detection Sensor, Wireless Detection Sensor, TVOC Detection Sensor, Detection Sensor, R720E Detection Sensor, Sensor
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DocumentDocumentWireless TVOC Detection Sensor ModelR720E Date: 2021.05.03 Version: V1.1 Wireless TVOC Detection Sensor R720E User Manual Copyright©Netvox Technology Co., Ltd. This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The specifications are subject to change without prior notice. Table of Content 1. Introduction ............................................................................................................................................................. 2 2. Appearance .............................................................................................................................................................. 2 3. Main Features .......................................................................................................................................................... 3 4. Set up Instruction .................................................................................................................................................... 4 5. Data Report ............................................................................................................................................................. 5 6. Installation ............................................................................................................................................................... 9 7. Information about Battery Passivation ................................................................................................................. 10 8. Important Maintenance Instruction....................................................................................................................... 11 1 1. Introduction R720E is the temperature, humility and TVOC detection device which is Class A device of NETVOX based on LoRaWANTM protocol. LoRa Wireless Technology: LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance. Widely used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation equipment, wireless security systems, industrial monitoring. Main features include small size, low power consumption, transmission distance, anti-interference ability and so on. LoRaWAN: LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and gateways from different manufacturers. 2. Appearance Indicator Function Key Built-in TVOC Sensor 2 3. Main Features Adopt SX1276 wireless communication module 2 ER14505 lithium batteries AA size (3.6V / section) in parallel TVOC concentration, temperature, and humidity detection Protection class IP65 Compatible with LoRaWANTM Class A Frequency hopping spread spectrum Configuration parameters can be configured via a third-party software platform, data can be read and alerts can be set via SMS text and email (optional) Applicable to third-party platforms: Actility/ ThingPark, TTN, MyDevices/ Cayenne Low power consumption and long battery life Note: Battery life is determined by the sensor reporting frequency and other variables, please refer to http://www.netvox.com.tw/electric/electric_calc.html On this website, users can find battery life time for varied models at different configurations. 3 4.Set up Instruction On/Off Power on Turn on Turn off (Restore to factory setting) Power off Note: Network Joining Never joined the network Had joined the network Fail to join the network Function Key Press and hold for 5 seconds Press once Sleeping Mode The device is on and in the network Low Voltage Warning Low Voltage Insert batteries. (users may need a screwdriver to open) Press and hold the function key for 3 seconds till the green indicator flashes once. Press and hold the function key for 5 seconds, and the green indicator flashes 20 times. Remove Batteries. 1. Remove and insert the battery; the device is at off state by default. Press and hold the function key for 3 seconds till the green indicator flashes once to turn on the device. 2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components. 3. At the first 5 seconds after power on, the device will be in engineering test mode. Turn on the device to search the network. The green indicator stays on for 5 seconds: success The green indicator remains off: fail Turn on the device to search the previous network. The green indicator stays on for 5 seconds: success The green indicator remains off: fail Suggest to check the device verification information on the gateway or consult your platform server provider. Restore to factory setting / Turn off The green indicator flashes 20 times: success The green indicator remains off: fail The device is in the network: green indicator flashes once and sends a report The device is not in the network: green indicator remains off Sleeping period: Min Interval. When the reportchange exceeds setting value or the state changes: send a data report according to Min. Interval. 3.2V 4 5. Data Report The device will immediately send a version packet report and a data report including voltage of the battery and TVOC value. The device sends data according to the default configuration before any other configuring. Default Setting: Maximum time: Max Interval=15 min Minimum time: Min Interval =15 min *Minimum time should not be less than 4min. Battery Change = 0x01 (0.1V) TVOC Change = 0x012C (300 ppb) Note: 1. R720E needs to work for 13 hours after the first power-on. (The sensor needs to be calibrated automatically during the 13 hours, and the data will be biased during this period. The accurate data shall prevail after 13 hours.) 2. On the condition that the sensor can operate normally, the read data is valid after the device is powered off and has been turned on again for 20 minutes. (The 20 minutes is the time for the sensor to enter a stable state.) 3. The device will report 0xFFFF when the sensor is damaged, the initiation fails, and the device fails to read the data three times continuously after warming up. *The above process will be completed automatically after the device is turned on; therefore, users do not need to operate by self. The data parsing reported by the device is referenced by the Netvox LoraWAN Application Command document and http://loraresolver.netvoxcloud.com:8888/page/index Data report configuration and sending period are as following: Min Interval (Unit: second) Any number 240 Max Interval (Unit: second) Any number between 240~65535 Reportable Change Can not be 0 Current Change Reportable Change Report per Min Interval Current Change Reportable Change Report per Max Interval 5 Example of ConfigureCmd FPort0x07 Bytes 1 Byte CmdID 1 Byte DeviceType Var(Fix =9 Bytes) NetvoxPayLoadData Config ReportReq 0x01 MinTime (2bytes Unit: s) MaxTime (2bytes Unit: s) BatteryChange TVOC Change (1byte Unit:0.1v) (2bytes Unit1ppb) Reserved (2Bytes, Fixed 0x00) Config ReportRsp 0x81 Status (0x00_success) Reserved (8Bytes, Fixed 0x00) ReadConfig ReportReq ReadConfig ReportRsp 0x02 R720E 0xA5 0x82 MinTime (2bytes, Unit: s) Reserved (9Bytes, Fixed 0x00) MaxTime BatteryChange TVOC Change Reserved (2bytes, Unit: s) (1byte, Unit: 0.1v) (2bytes, Unit: 1ppb) (Bytes, Fixed 0x00) ResetTVOC BaseLineReq 0x03 Reserved (9Bytes, Fixed 0x00) ResetTVOC BaseLineRsp 0x83 Status (0x00_success) Reserved (8Bytes, Fixed 0x00) (1) Command Configuration: MinTime = 5min, MaxTime = 5min, BatteryChange = 0.1v, TVOC Change=100ppb Downlink 01A5012C012C0100640000 Response 81A5000000000000000000Configuration success 81A5010000000000000000Configuration failure *When min time < 4min, Configuration fails (2) Read Configuration: Downlink 02A5000000000000000000 Response 82A5012C012C0100640000Current configuration (3) Calibrate the baseline: After the configuration is successful, users can re-acquire and set the baseline value after 13 hours. Downlink03A5000000000000000000 6 Response 83A5000000000000000000Configuration success 83A5010000000000000000Configuration failure Example of ReportDataCmd FPort0x06 Bytes 1 Byte Version 1 Byte 1 Byte DeviceType ReportType Var(Fix=8 Bytes) NetvoxPayLoadData Version 1 byte0x01----the Version of NetvoxLoRaWAN Application Command Version DeviceType 1 byte Device Type of Device ReportType 1 byte the Presentation of the NetvoxPayLoadDataaccording the devicetype NetvoxPayLoadData Fixed bytes (Fixed =8bytes) Device Report Device Type Type NetvoxPayLoadData R720E 0xA5 0x01 Battery (1Byte, Unit: 0.1V) TVOC Temperature (2Bytes, 1ppb) (Signed2Bytes, Unit: 0.01°C) Humidity (2Bytes, Unit: 0.01%) Reserved (1Byte, fixed 0x00) Uplink 01A5012400290A4B11B400 TVOC= 0029 Hex = 41 Dec , 41 ppb Temperature= 0A4B Hex = 2635 Dec , 2635*0.01° = 26.35 °C Humidity= 11B4 Hex = 4532 5 Dec , 4532*0.01% = 45.32 % Example for MinTime/MaxTime logic: Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V MaxTime MaxTime Sleeping(MinTime) Wakes up and collects data REPORTS 3.6V Wakes up and collects data REPORTS 3.6V Sleeping(MinTime) Wake up and collects data REPORTS 3.6V Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value. 7 Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V. MaxTime Sleeping(MinTime) sleeping sleeping sleeping 0H 15th M 30th M 45th M 1H 2H Wakes up and collects data REPORT 3.6V Wakes up and collects data 3.6V Does not report Wakes up and collects data 3.6V Does not report Wakes up and collects data 3.6V Does not report Wakes up and collects data REPORTS 3.6V Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V. sleeping Wakes up and collects data 3.5V |3.5-3.6|=0.1 REPORTS 3.5V sleeping ... 0H Wakes up and collects data REPORTS 3.6V 15th M Wakes up and collects data 3.6V Does not report 30th M 45th M Wakes up and collects data 3.5V Does not report Users push the button, REPORTS 3.5V. Recalculate MaxTime. MaxTime Wakes up and collects data 3.5V Does not report 1H 1H 10th M 1H 25th M Wakes up and Wakes up and collects data collects data 3.5V 3.5V Does not report Does not report 1H 40th M 1H 55th M Wakes up and collects data 3.5V Does not report 2H 10th M Wakes up and collects data REPORTS 3.5V Notes : 1) The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data. 2) The data collected is compared with the last data reported. If the data variation is greater than the ReportableChange value, the device reports according to MinTime interval. If the data variation is not greater than the last data reported, the device reports according to MaxTime interval. 3) We do not recommend to set the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up frequently and the battery will be drained soon. 4) Whenever the device sends a report, no matter resulting from data variation, button pushed or MaxTime interval, another cycle of MinTime/MaxTime calculation is started. 8 6. Installation 1. R720E is pasted with 3M double-sided tape (Figure 1 below). First, remove the middle part of the double-sided tape (the red frame in Figure 1). 2. Tear off the backing paper on one side of the double-sided tape, and paste the double-sided tape on the back of the device (Figure 2 below). 3. Finally, tear off the backing paper on the other side of the double-sided tape, and paste the device on a wall or other objects. (Please do not stick the device on the rough wall or object to avoid the device from falling off after a long time of use.) Note: Before installation, be sure to wipe the wall or other objects clean to avoid dust on the wall or other objects which will affect the effect of the installation. Do not install the device in a metal shielded box or an environment with other electrical equipment around to avoid affecting the wireless transmission signal of the device. When sticking 3M double-sided tape, be sure to stick the double-sided tape within the structure of the device so as not to affect the appearance. 4. R720E detects according to Min Time. When the detected TVOC value or battery voltage is compared with the last report, the value exceeds the set value. (Default TVOC Value: 300ppb; Default Battery Voltage: 0.1V) If the TVOC concentration exceeds 300ppb or the battery voltage exceeds 0.1V, the currently detected TVOC, temperature, and humidity will be sent. 5. If the variation of TVOC concentration or battery voltage does not exceed the set value, the data is reported regularly according to the Max Time. Note: Min Time and Max Time defaults 15 minutes. R720E is suitable below scenarios: Residential Shopping mall Station School Airport Construction site The place needs to detect the TVOC, temperature, or humidity. Figure 1 Figure 2 R720E R720E Ground Installation Diagram 9 7. Information about Battery Passivation Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages including low self-discharge rate and high energy density. However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode and thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride layer prevents rapid self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation may also lead to voltage delay when the batteries are put into operation, and our devices may not work correctly in this situation. As a result, please make sure to source batteries from reliable vendors, and the batteries should be produced within the last three months. If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis. *To determine whether a battery requires activation Connect a new ER14505 battery to a 68ohm resistor in parallel, and check the voltage of the circuit. If the voltage is below 3.3V, it means the battery requires activation. *How to activate the battery 1) Connect a battery to a 68ohm resistor in parallel 2) Keep the connection for 6~8 minutes 3) The voltage of the circuit should be 3.3V 10 8. Important Maintenance Instruction The device is a product with superior design and craftsmanship and should be used with care. The following suggestions will help you use the warranty service effectively. · Keep the equipment dry. Rain, moisture and various liquids or water may contain minerals that can corrode electronic circuits. In case the device is wet, please dry it completely. · Do not use or store in dusty or dirty areas. This way can damage its detachable parts and electronic components. · Do not store in excessive heat place. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts. · Do not store in excessive cold place. Otherwise, when the temperature rises to normal temperature, moisture will form inside which will destroy the board. · Do not throw, knock, or shake the device. Treating equipment roughly can destroy internal circuit boards and delicate structures. · Do not wash with strong chemicals, detergents, or strong detergents. · Do not paint the device. Smudges can make debris block detachable parts up and affect normal operation. · Do not throw the battery into the fire to prevent the battery from exploding. Damaged batteries may also explode. All the above suggestions apply equally to your device, batteries, and accessories. If any device is not operating properly. Please take it to the nearest authorized service facility for repairing. 11