Milesight EM300 Series User manual

Environment
Monitoring Sensor
Featuring LoRaWAN®
EM300 Series
User Guide

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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 device password when first
configuration. The default password is 123456.
The device is not intended to be used as a reference sensor, and Milesight will not should
responsibility 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 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.
All information in this guide is protected by copyright law. Whereby, no organization or individual
shall copy or reproduce the whole or part of this user guide by any means without written
authorization from Xiamen Milesight IoT Co., Ltd.

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For assistance, please contact
Milesight technical support:
Email: iot.supp[email protected]om
Tel: [phone]
Fax: [phone]
Address: Building C09, Software Park III,
Xiamen 361024, China
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
July 5, 2021
V 2.2
Delete USB Type-C description
Dec. 7, 2021
V 2.3
Add alarm setting, change SN to 16 digits

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Contents
1. Product Introduction.................................................................................................................................5
1.1 Overview........................................................................................................................................... 5
1.2 Features............................................................................................................................................5
2. Hardware Introduction..............................................................................................................................5
2.1 Packing List......................................................................................................................................5
2.2 Hardware Overview.........................................................................................................................6
2.3 Dimensions...................................................................................................................................... 6
2.4 Power Button................................................................................................................................... 6
3. Operation Guide.........................................................................................................................................7
3.1 NFC Configuration.......................................................................................................................... 7
3.2 LoRaWAN Settings..........................................................................................................................8
3.3 Basic Settings................................................................................................................................11
3.4 Advanced Settings........................................................................................................................11
3.4.1 Calibration Settings...........................................................................................................11
3.4.2 Threshold Settings............................................................................................................ 11
3.4.3 Alarm Settings....................................................................................................................12
3.5 Maintenance.................................................................................................................................. 12
3.5.1 Upgrade...............................................................................................................................12
3.5.2 Backup.................................................................................................................................13
3.5.3 Reset to Factory Default...................................................................................................14
4. Installation................................................................................................................................................14
5. Milesight IoT Cloud Management........................................................................................................ 15
6. Device Payload........................................................................................................................................ 16
6.1 Basic Information..........................................................................................................................17
6.2 Sensor Data....................................................................................................................................17
6.3 Downlink Commands................................................................................................................... 18

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1. Product Introduction
1.1 Overview
EM300 series is a sensor mainly used for outdoor environment through wireless LoRa network.
EM300 device is battery powered and designed for multiple mounting ways. It is equipped with
NFC (Near Field Communication) and can easily be configured by a smartphone.
Sensor data are transmitted in real-time using standard LoRaWAN®protocol. LoRaWAN®
enables encrypted radio transmissions over long distance 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
2. Hardware Introduction
2.1 Packing List
1 × EM300 Sensor
Wall Mounting
Kits
1 ×
Warranty Card
1 ×
Quick Guide
Double Sided Tape(for
SLD or MCS sensor)
Mounting Screws (for
SLD or MCS sensor)
If any of the above items is missing or damaged, please contact your sales representative.

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2.2 Hardware Overview
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.
Front View:
①NFC Area
Bottom View:
②Vent
③Waterproof Connectors
(For water leakage and magnet switch sensor)

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Check
On/Off Status
Quickly press the power button.
Light On: Device is on.
Light Off: Device is off.
3. Operation Guide
3.1 NFC Configuration
EM300 series can be configured via NFC.
1. Download and install “Milesight ToolBox” App from Google Play or Apple Store.
2. Enable NFC on the smartphone and open“Milesight ToolBox” App.
3. Attach the smartphone with NFC area to the device to read basic information.
4. 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
phone . Default password is 123456.
5. Tap “Read” button to check current status and sensor data of device.
6. Tap “Write” button to write all your settings to the device.

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Note:
1) Ensure the location of smartphone NFC area and it’s recommended to take off phone case.
2) If the smartphone fails to read/write configurations via NFC, keep the phone away and back
to try again.
3) EM300 series can also be configured by 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.

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Parameters
Description
Device EUI
Unique ID of the device which can also be found on the label.
App EUI
Default App EUI is 24E124C0002A0001.
Application Port
The port used for sending and receiving data, 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 network server, it will resend
data 3 times at most.
Rejoin Mode
Reporting interval ≤ 30 mins: 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: device will send specific mounts of LoRaMAC
packets every to check connection status every reporting interval; If no reply
after specific packets, the device will re-join.
ADR Mode
Allow network server to adjust datarate of the device.
Tx Power
Transmit power of device.
Note:
1) Please contact sales for device EUI list if there are many units.
2) Please contact sales if you need random App keys before purchase.
3) Select OTAA mode if you use Milesight IoT cloud to manage devices.
4) Only OTAA mode supports rejoin mode.
LoRaWAN Frequency Settings:
Go to Setting->LoRaWAN Settings of ToolBox App to select supported frequency and select
channels to send uplinks. Make sure the channels match the LoRaWAN®gateway.

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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.

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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 network server.Default: 600s
Temperature Unit
Change the temperature unit displayed on the ToolBox.
Note:
1) The temperature unit in the reporting package is fixed as °C.
2) Please modify the threshold settings if the unit is changed.
Change Password
Change the password for ToolBox App or software to read/write this
device.
3.4 Advanced Settings
3.4.1 Calibration Settings
ToolBox supports numerical calibration for all items. Go to “Device->Setting->Calibration
Settings” of ToolBox App to type the calibration value and save, the device will add the
calibration value to raw value.
3.4.2 Threshold Settings
Go to Device->Setting->Threshold Settings of ToolBox App to enable the threshold settings and

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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 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
1. Download firmware from Milesight website to your smartphone.
2. Open Toolbox App and click “Browse” to import firmware and upgrade the device.
Note:
1) Operation on ToolBox is not supported during an upgrade.
2) Only Android version ToolBox supports the upgrade feature.

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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.
1. Go to “Template” page on the App and save current settings as a template. You can also edit
the template file.
2. Select one template file which saved in the smartphone and click “Write”, then attach to
another device to write configuration.
Note: Slide the template item left to edit or delete the template. Click the template to edit the
configurations.

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3.5.3 Reset to Factory Default
Please select one of following methods to reset device:
Via Hardware: Hold on power button (internal) for more than 10s.
Via ToolBox App: Go to “Device->Maintenance” to click “Reset”, then attach smart phone with
NFC area to device to complete reset.
4. Installation
1. Attach EM300 to the wall and mark the two holes on the wall. The connecting line of two
holes must be a horizontal line.

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2. Drill the holes according to the marks and screw the wall plugs into the wall.
3. Mount the EM300 to the wall via mounting screws.
4. Cover the mounting screws with screw caps.
5. For leak detection senor, install the probe/cable to the place where liquid may leak. For magn
et switch sensor, install the magnet beside the door/window.
Note: For SLD sensor, please ensure the metal pins of the probe are flat on the floor; for ZLD
sensor, the cable can’t be twined or accumulated together. The probe or cable of water leakage
sensor should be placed in an area of concern where water from a leak would likely accumulate.
5. Milesight IoT Cloud Management
EM300 series can be managed by 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 following steps.
1. Ensure Milesight LoRaWAN®gateway is online in Milesight IoT Cloud. For more info about
connecting gateway to cloud please refer to gateway’s user guide.

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2. Go to “My Devices” page and click “+New Devices”. Fill in the SN of device and select
associated gateway.
3. After the device is online in Milesight IoT Cloud, you can check the data via webpage or
mobile App and create dashboard for it.
6. Device Payload
All data are based on 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.

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6.1 Basic Information
EM300 series sensors report basic information of sensor whenever joining the network.
Example:
6.2 Sensor Data
EM300 series sensors report sensor data according to reporting interval (10min by default).
Battery level is reported every 6 hours.
Example:
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
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)
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
01 75 64 03 67 10 01 04 68 71 05 00 01
Channel
Type
Value
Channel
Type
Value

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6.3 Downlink Commands
EM300 series sensors support downlink commands to configure the device. The application
port is 85 by default.
Example: Set reporting interval as 20 minutes.
-END-
01
75
(Battery)
64 => 100%
03
67
(Temperat
ure)
10 01 => 01 10 = 272
Temp=272*0.1=27.2°C
Channel
Type
Value
Channel
Type
Value
04
68
(Humidity)
71=>113
Hum=113*
0.5=56.5%
05
00
01=>Water leakage
Channel
Type
Description
ff
03 (Set Reporting Interval)
2 Bytes, unit: s
ff03b004
Channel
Type
Value
ff
03 (Set Reporting
Interval)
b0 04 => 04 b0 = 1200s
= 20 minutes