Environment Monitoring Sensor
Featuring LoRaWAN ®
EM300 Series
User Guide
Applicability
This guide is applicable to EM300 series sensors shown as follows, except where otherwise indicated.
| Model | Description |
| EM300-TH | Temperature and Humidity Sensor |
| EM300-MCS | Magnet Switch Sensor |
| EM300-SLD | Spot Leak Detection Sensor |
| EM300-ZLD | Zone Leak Detection Sensor |
Safety Precautions
Milesight will not shoulder responsibility for any loss or damage resulting from not following the instructions of this operating guide.
- The device must not be disassembled or remodeled in any way.
- In order to protect the security of the device, please change the device password when first configuring. The default password is 123456.
- The device is not intended to be used as a reference sensor, and Milesight will not should responsible for any damage which may result from inaccurate readings.
- Do not place the device close to objects with naked flames.
- Do not place the device where the temperature is below/above the operating range.
- Make sure electronic components do not drop out of the enclosure while opening.
- When installing the battery, please install it accurately, and do not install the reverse or wrong model.
- Make sure both batteries are the newest when install, or battery life will be reduced.
- The device must never be subjected to shocks or impacts.
Declaration of Conformity
EM300 series is in conformity with the essential requirements and other relevant provisions of the CE, FCC, and RoHS.
Copyright © 2011-2022 Milesight. All rights reserved.
Revision History
| Date | Doc Version | Description |
| Oct. 14, 2020 | V 1.0 | Initial version |
| Oct. 21, 2020 | V 1.1 | Model name change and pictures replace |
| Nov. 19, 2020 | V 2.0 | Layout replace |
| Mar. 4, 2021 | V 2.1 | Layout update |
| 5-Jul-21 | V 2.2 | Delete USB Type-C description |
| Dec. 7, 2021 | V 2.3 | Add alarm setting, change SN to 16 digits |
Product Introduction
1.1 Overview
EM300 series is a sensor mainly used for outdoor environments through a wireless LoRa network.
EM300 device is battery powered and designed for multiple mounting ways. It is equipped with NFC (Near Field Communication) can easily be configured by a smartphone.
Sensor data are transmitted in real-time using the standard LoRaWAN® protocol. LoRaWAN ® enables encrypted radio transmissions over long distances while consuming very little power. The user can obtain sensor data and view the trend of data change through Milesight IoT Cloud or through the user’s own Network Server.
1.2 Features
- Up to 11 km communication range
- Easy configuration via NFC
- Standard LoRaWAN® support
- Milesight IoT Cloud compliant
- Low power consumption with 4000mAh replaceable battery
Hardware Introduction
2.1 Packing List
If any of the above items is missing or damaged, please contact your sales representative. c
2.2 Hardware Overview
Front View:
- NFC Area
Bottom View: - Vent
- Waterproof Connectors
(For water leakage and magnet switch sensor)
 |  |
2.3 Dimensions(mm)
2.4 Power Button
Note: The LED indicator and power button are inside the device. Switch on/off and reset can also be configured via NFC.
| Function | Action | LED Indication |
| Turn On | Press and hold the button for more than 3 seconds. | Off → On |
| Turn Off | Press and hold the button for more than 3 seconds. | On -> Off |
| Reset | Press and hold the button for more than 10 seconds. | Blink 3 times. |
| Check On/Off Status | Quickly press the power button. | Light On: The device is on. Light Off: The device is off. |
Operation Guide
3.1 NFC Configuration
EM300 series can be configured via NFC.
- Download and install “Milesight ToolBox” App from Google Play or Apple Store.
- Enable NFC on the smartphone and open“Milesight ToolBox” App.
- Attach the smartphone with NFC area to the device to read basic information.
- Basic information and settings of devices will be shown on ToolBox if it’s recognized successfully. You can turn on/off the device by tapping the button on the Device Status. In order to protect the security of devices, password validation is required when configuring via unused phones. Default password is 123456.
- Tap “Read” button to check the current status and sensor data of the device.
- Tap the “Write” button to write all your settings to the device.
Note:
- Ensure the location of the smartphone NFC area and it’s recommended to take off the phone case.
- If the smartphone fails to read/write configurations via NFC, keep the phone away and back to try again.
- EM300 series can also be configured by a dedicated NFC reader provided by Milesight IoT or you can configure it via TTL interface inside the device.
3.2 LoRaWAN Settings
LoRaWAN settings is used for configuring the transmission parameters in LoRaWAN® network.
Basic LoRaWAN Settings:
Go to Device->Setting->LoRaWAN Settings of ToolBox App to configure join type, App EUI, App Key, and other information. You can also keep all settings by default.
| Parameters | Description |
| Device EUI | Unique ID of the device can also be found on the label. |
| App EUI | Default App EUI is 24E124C0002A0001. |
| Application Port | The port used for sending and receiving data, the default port is 85. |
| Join Type | OTAA and ABP mode are available. |
| Application Key | Appkey for OTAA mode, default is 5572404C696E6B4C6F52613230313823. |
| Device Address | DevAddr for ABP mode, default is the 5th to 12th digits of SN. |
| Network Session Key | Nwkskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. |
| Application Session Key | Appskey for ABP mode, default is 5572404C696E6B4C6F52613230313823. |
| Spread Factor | If ADR is disabled, the device will send data via this spread factor. |
| Confirmed Mode | If the device does not receive ACK packet from a network server, it will resend data 3 times at most. |
| Rejoin Mode | Reporting interval ≤ 30 mins: the device will send specific mounts of LoRaMAC packets to check connection status every 30 mins; If no reply after specific packets, the device will re-join. Reporting interval > 30 mins: the device will send specific mounts of LoRaMAC packets every to check the connection status every reporting interval; If no reply after specific packets, the device will re-join. |
| ADR Mode | Allow the network server to adjust the data rate of the device. |
| Tx Power | Transmit power of device. |
Note:
- Please contact sales for device EUI list if there are many units.
- Please contact sales if you need random App keys before purchase.
- Select OTAA mode if you use Milesight IoT cloud to manage devices.
- Only OTAA mode supports rejoin mode.
LoRaWAN Frequency Settings:
Go to Setting->LoRaWAN Settings of ToolBox App to select the supported frequency and select channels to send uplinks. Make sure the channels match the LoRaWAN® gateway.
If frequency is one of CN470/AU915/US915, you can enter the index of the channel that you want to enable in the input box, making them separated by commas.
Examples:
1, 40: Enabling Channel 1 and Channel 40
1-40: Enabling Channel 1 to Channel 40
1-40, 60: Enabling Channel 1 to Channel 40 and Channel 60
All: Enabling all channels
Null: Indicates that all channels are disabled
Note:
For -868M model, default frequency is EU868;
For -915M model, default frequency is AU915.
3.3 Basic Settings
Go to “Device->Setting->General Settings” of ToolBox App to change the reporting interval, etc.
| Parameters | Description |
| Reporting Interval | Reporting interval of transmitting data to a network server.Default: 600s |
|
Temperature Unit | Change the temperature unit displayed on the ToolBox. Note: |
| Change Password | Change the password for ToolBox App or software to read/write this device. |
3.4 Advanced Settings
3.4.1 Calibration Settings
The toolBox supports numerical calibration for all items. Go to “Device->Setting->Calibration Settings” of the ToolBox App to type the calibration value and save, the device will add the calibration value to the raw value.
3.4.2 Threshold Settings
Go to Device->Setting->Threshold Settings of ToolBox App to enable the threshold settings and input the threshold. EM300 series will upload the current data once instantly after the temperature threshold is triggered.
3.4.3 Alarm Settings
Go to “Device->Setting->Alarm Settings” of ToolBox App to enable the alarm settings. When EM300 detects a door status change or water leakage, it will report the alarm according to reporting interval and reporting times setting.
3.5 Maintenance
3.5.1 Upgrade
- Download firmware from the Milesight website to your smartphone.
- Open Toolbox App and click “Browse” to import firmware and upgrade the device.
Note:
- Operation on ToolBox is not supported during an upgrade.
- Only the Android version of ToolBox supports the upgrade feature.
3.5.2 Backup
EM300 devices support configuration backup for easy and quick device configuration in bulk.
Backup is allowed only for devices with the same model and LoRa frequency band.
- Go to the “Template” page on the App and save current settings as a template. You can also edit the template file.
- Select one template file which saved in the smartphone and click “Write”, then attach it to another device to write the configuration.
Note: Slide the template item left to edit or delete the template. Click the template to edit the configurations.
3.5.3 Reset to Factory Default
Please select one of the following methods to reset the device:
Via Hardware: Hold on to the power button (internal) for more than 10s.
Via Toolbox App: Go to “Device->Maintenance” to click “Reset”, then attach the smartphone with
NFC area to the device to complete the reset.
Installation
- Attach EM300 to the wall and mark the two holes on the wall. The connecting line of two holes must be a horizontal line.
- Drill the holes according to the marks and screw the wall plugs into the wall.
- Mount the EM300 to the wall via mounting screws.
- Cover the mounting screws with screw caps.
- For leak detection senor, install the probe/cable to the place where liquid may leak. For the magnet switch sensor, install the magnet beside the door/window.
Note: For the SLD sensor, please ensure the metal pins of the probe are flat on the floor; for the ZLD sensor, the cable can’t be twined or accumulated together. The probe or cable of the water leakage sensor should be placed in an area of concern where water from a leak would likely accumulate.
Milesight IoT Cloud Management
EM300 series can be managed by the Milesight IoT Cloud platform. Milesight IoT cloud is a comprehensive platform that provides multiple services including device remote management and data visualization with the easiest operation procedures. Please register a Milesight IoT Cloud account before operating the following steps.
- Ensure the Milesight LoRaWAN® gateway is online in Milesight IoT Cloud. For more info about connecting the gateway to the cloud please refer to the gateway’s user guide.
- Go to the “My Devices” page and click “+New Devices”. Fill in the SN of the device and select the associated gateway.
- After the device is online in Milesight IoT Cloud, you can check the data via webpage or mobile App and create the dashboard for it.
Device Payload
All data are based on the following format(HEX):
| Channel1 | Type1 | Data1 | Channel2 | Type2 | Data2 | Channel 3 | … |
| 1 Byte | 1 Byte | N Bytes | 1 Byte | 1 Byte | M Bytes | 1 Byte | … |
For decoder examples please find files on https://github.com/Milesight-IoT/SensorDecoders.
6.1 Basic Information
EM300 series sensors report basic information of sensors whenever joining the network.
| Channel | Type | Description |
|
ff | 01(Protocol Version) | 01=>V1 |
| 09 (Hardware Version) | 01 40 => V1.4 | |
| 0a(Software Version) | 01 14 => V1.14 | |
| 0f(Device Type) | 00: Class A, 01: Class B, 02: Class C | |
| 16(Device SN) | 16 digits |
Example:
| ff 09 01 00 ff 0a 01 02 ff 0f 00 | |||||
| Channel | Type | Value | Channel | Type | Value |
| ff | 09 (Hardware version) | 0100 (V1.0) | ff | 0a (Software version) | 0102 (V1.2) |
| Channel | Type | Value | |||
| ff | 0f (Device Type) | 00 (Class A) | |||
6.2 Sensor Data
EM300 series sensors report sensor data according to reporting intervals (10min by default). The battery level is reported every 6 hours.
| Channel | Type | Description |
| 01 | 75(Battery Level) | UINT8, Unit: % |
| 03 | 67 (Temperature) | INT16, Unit: °C |
| 04 | 68(Humidity) | INT8, Unit: % |
| 05 | 00(Water Leakage Status) | 00: Not water leakage 01: Water leakage |
| 06 | 00(Magnet Status) | 00: Magnet switch closed 01: Magnet switch open |
Example:
| 01 75 64 03 67 10 01 04 68 71 05 00 01 | |||||
| Channel | Type | Value | Channel | Type | Value |
| 01 | 75 | 64 => 100% | 03 | 67 (Temperature) | 10 01 => 01 10 = 272 Temp=272*0.1=27.2°C |
| Channel | Type | Value | Channel | Type | Value |
| 04 | 68 | 71=>113 Hum=113* 0.5=56.5% | 05 | 00 | 01=>Water leakage |
6.3 Downlink Commands
EM300 series sensors support downlink commands to configure the device. The application port is 85 by default.
| Channel | Type | Description |
| ff | 03 (Set Reporting Interval) | 2 Bytes, unit: s |
Example: Set reporting interval as 20 minutes.
| ff03b004 | ||
| Channel | Type | Value |
| ff | 03 (Set Reporting Interval) | b0 04 => 04 b0 = 1200s = 20 minutes |
 | For assistance, please contact Milesight technical support: Email: iot.support@milesight.com Tel: 86-592-5085280 Fax: 86-592-5023065 Address: Building C09, Software Park III, Xiamen 361024, China |
Documents / Resources
 | Milesight EM300-TH Temperature and Humidity Sensor Milesight [pdf] User Guide EM300-TH, Temperature and Humidity Sensor Milesight, EM300-TH Temperature and Humidity Sensor Milesight, Humidity Sensor Milesight, Sensor Milesight, Milesight |
 | Milesight EM300-TH Temperature and Humidity Sensor [pdf] User Guide EM300-TH Temperature and Humidity Sensor, EM300-MCS Magnet Switch Sensor, EM300-SLD Spot Leak Detection Sensor, EM300-ZLD Zone Leak Detection Sensor, EM300-TH, EM300-MCS, EM300-SLD, EM300-ZLD, EM300-TH, Temperature and Humidity Sensor, Humidity Sensor, Sensor |
