Milesight EM300 Series Environment Monitoring Sensor Featuring LoRa WAN User Guide

Milesight EM300 Series Environment Monitoring Sensor Featuring LoRa WAN

Applicability

This guide is applicable to EM300 series sensors shown as follows, except where otherwise indicated.

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 configuring. The default password is 123456.
• The device is not intended to be used as a reference sensor, and Milesight will not be responsible for any damage that 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.

For assistance, please contact  Milesight technical support:
Email: [email protected]
Support Portal : support.milesight-iot.com
Tel : 86-592-5085280
Fax : 86-592-5023065
Address: Building C09, Software Park III, Xiamen 361024, China

Revision History

Nov. 24, 2022

|

V 2.4

| 1.    Add EM300-DI model

2.    Add Milesight D2D feature

3.    Add data storage feature

4.    Add time synchronization and data retransmission feature

Product Introduction

Overview

EM300 series is a sensor mainly used for outdoor environments through a wireless LoRaWAN® 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 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.

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

Packing List

If any of the above items is missing or damaged, please contact your sales representative.

Hardware Overview

GPIO Wiring (EM300-DI)

Dimensions(mm)

Power Button

Note : The LED indicator and power button are inside the device. Switch on/off and reset can also be configured via NFC.

Check

On/Off Status

|

Quickly press the power button.

| Light On: Device is on.
Light Off: Device is off.

Operation Guide

NFC Configuration
EM300 series can be monitored and configured via NFC. Please refer the following steps to  complete configuration.

1. Download and install “Milesight ToolBox” App from Google Play or Apple Store.
2. Enable NFC on the smartphone and launch Milesight ToolBox.
3. Attach the smartphone with NFC area to the device to read device information. Basic information and settings of the device will be shown on ToolBox App if it’s recognized successfully. You can read and configure the device by tapping the Read/Write device on theApp. In order to protect the security of the device, please change password when first configuration. The default password is 123456.

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

LoRaWAN Settings
LoRaWAN settings is used for configuring the transmission parameters in LoRaWAN® network.

Basic LoRaWAN Settings:
Go to Device > Setting > LoRaWAN Settings to configure join type, App EUI, App Key and other information. You can also keep all settings by default

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.

LoRaWAN Version| V1.0.2, V1.0.3, V1.1 are available.
Work Mode| It’s fixed as Class A.
RX2 Data Rate| RX2 data rate to receive downlinks or send D2D commands.
RX2 Frequency| RX2 frequency to receive downlinks or send D2D commands. Unit: Hz
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 once.

Rejoin Mode

| The device will send a specific number of LinkCheckReq MAC packets to the

network server every 30 mins to validate connectivity; If there is no response, the device will re-join the network.

Set the number of packets sent|

When rejoin mode is enabled, set the number of LinkCheckReq packets sent.

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 to select 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

Time synchronization
ToolBox App Sync: Go to Device -> Status of ToolBox App to click Sync to sync the time.

Network Server Sync:
Go to Device > Settings > LoRaWAN Settings of ToolBox App to change device LoRaWAN® version as 1.0.3 or above, the network server will use MAC command to assign the time to device every time it joins the network.

Note:

1. This function is only applicable to network server using LoRaWAN® 1.0.3 or 1.1 version.
2. Network server will sync the time which time zone is UTC+0 by default. It’s suggested to sync the time via ToolBox App to change the time zone.

Basic Settings & Interface Settings
Go to Device > Setting > General Settings to change the reporting interval, etc.

Reporting Interval

| Reporting interval of transmitting current sensor values to network

server. Default: 10 min

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.

For EM300-DI, go to Device > Settings > Interface Settings to modify configurations.

Interface Type

| Change the interface type of GPIO interface. Counter and Digital is

available, counter as default.

Pulse Filter

| When the function is enabled, pulse with a rate of more than 250us can

be counted.

Modify Count Value| Set the initial counting value.

Advanced Settings Calibration Settings
ToolBox supports temperature and humidity calibration. Go to Device > Setting

Calibration Settings to type the calibration value and save, the device will add the calibration value to raw value.

Threshold Settings
Go to Device > Setting > Threshold Settings to enable the threshold settings and input the threshold. EM300 series will upload the current data once instantly when the temperature  threshold is triggered. Note that when you change the temperature unit, please re-configured the  threshold.

Alarm Settings
Go to Device > Setting > Alarm Settings 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

Data Storage
EM300 series sensor supports storing more than 2000 data records locally and exports data via ToolBox App. The device will record the data according to reporting interval and even joining network.

1. Go to Device > Setting > General Settings to enable data storage feature
2. Go to Device > Maintenance, click Export, then select the data time range and click Confirm to  export data. ToolBox App can only export last 14 days’ data
3. Click Data Cleaning to clear all stored data inside the device

Data Retransmission
EM300 series sensor supports data retransmission to ensure network server can get all data even if network is down for some times. There are two ways to get the lost data:

• Network server sends downlink commands to to enquire the historical data for specifying time range, see section 5.4;
• When network is down if no response from LinkCheckReq MAC packets for a period of time, the device will record the network disconnected time and re-transmit the lost data after device re-connects the network.

Here are the steps for data retransmission:

1. Ensure the device time is correct (see section 3.4);
2. Enable data storage feature and data retransmission feature;
3. Go to Device > Setting > General Settings to enable rejoin mode feature and set the number of packets sent. Take below as example, the device will send LinkCheckReq MAC packets to the network server at least every 30 minutes to check if the network is disconnected; if there is no response for 8 times (8 * 30 mins = 240 mins =4 hours), the device will record a data lost time point (disconnected time minus 4 hours).
4. After the network connected back, the device will send the lost data from the point in time when the data was lost according to the reporting interval.

Note:

1. If the device is rebooted or re-power when data retransmission is not completed, the device will re-send all retransmission data again after device is reconnected to the network;
2. If the network is disconnected again during data retransmission, it will only send the latest disconnected data;
3. The retransmission data format is started with “20ce”, please refer to see section 5.4.
4. Data retransmission will increase the uplinks and shorten the battery life

Milesight D2D Settings
Milesight D2D protocol is developed by Milesight and used for setting up transmission among Milesight devices without gateway. When the Milesight D2D settings is enabled, EM300-TH/EM300-ZLD/ EM300-SLD/EM300-MCS can work as D2D controller to send control commands to trigger Milesight D2D agent devices.

1. Configure RX2 datarate and RX2 frequency in LoRaWAN® settings, it is suggested to change the default value if there are many LoRaWAN® devices around.
2. Go to Device > Setting > D2D Settings to enable Milesight D2D feature.
3. Define an unique D2D key which is the same as Milesight D2D agent devices. (Default D2D key: 5572404C696E6B4C6F52613230313823)
4. Enable one of status mode and configure 2-byte hexadecimal Milesight D2D command. When the status is triggered, EM300 series sensor will send this control command to corresponding  Milesight D2D agent devices. Take EM300-ZLD as example below:

Note:

1. If you enable LoRa Uplink, a LoRaWAN® uplink packet that contains the sensor status or temperature threshold alarm will be sent to gateway after the Milesight D2D control command packet. Otherwise, sensor status or threshold alarm will not send to LoRaWAN® gateway.
2. If you want to enable Temperature Threshold Trigger Status: Trigger or Temperature Threshold Trigger Status: not triggered, please enable and configure temperature threshold feature under Threshold Settings.

Maintenance
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

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 LoRaWAN® 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.

Reset to Factory Default
Please select one of following methods to reset device: Via Hardware: Hold on power button (internal) for more than 10s until LED blinks. Via ToolBox App: Go to Device > Maintenance to click Reset, then attach smart phone with NFC area to device to complete reset.

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
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.
5. For leak detection senor, install the probe/cable to the place where liquid may leak;  for magnet switch sensor, install the magnet beside the door/window; for pulse counter, connect  the wires to a pulse meter.
   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

Device Payload
All data are based on following format(HEX), the Data field should follow little-endian

For decoder examples please find files on https://github.com/Milesight- IoT/SensorDecoders.

Basic Information
EM300 series sensors report basic information of sensor whenever joining the network

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)

|  |  |

Sensor Data
EM300 series sensors report sensor data according to reporting interval (10min by default). Battery level is reported every 6 hours

05

| 00(Water Leakage

Status)

| 00: Not water leaked 01: Water is leaked

06

|

00(Magnet Status)

| 00: Magnet switch close

01: Magnet switch open

05| c8(Counter)| 4 bytes, unsigned

05

|

00(Digital)

| 00: low

01: high

Examples:
EM300-SLD/ZLD:

01 75 64 03 67 10 01 04 68 71 05 00 01

Channel| Type| Value| Channel| Type| Value

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 is leaked

EM300-DI (Counter):

017564 03671e01 04685e 05c800000000

Channel| Type| Value| Channel| Type| Value

01

|

75

(Battery)

|

64 => 100%

|

03

| 67

(Temperat ure)

|

1e 01 => 01 1e = 286 Temp=286*0.1=28.6°C

Channel| Type| Value| Channel| Type| Value

04

|

68

(Humidity)

| 5e=>94

Hum=94* 0.5=47%

|

05

|

c8 (Counter)

|

06 00 00 00=>

00 00 00 00=6

Downlink Commands
EM300 series sensors support downlink commands to configure the device. The application port is 85 by default.

ff

| 03 (Set Reporting Interval)| 2 Bytes, unit: s

06(Set Threshold Alarm)

| 9 Bytes, CTRL (1B) + Min (2B) + Max (2B) +00000000(4B)

CTRL:

Bit0~Bit2:

00      – disable

01      – below (minimum threshold) 010 – above (maximum threshold)

 |  | 011 – within

100 – below or above Bit3~Bit7: 11001

---|---|---
10 (Reboot)| ff(Reserved)

79(Set D2D settings)

| 4 Bytes, Number(1B)+Function(1B)+D2D Command(2B)

Number:

01 -Temperature threshold trigger 02 -Temperature threshold doesn’t trigger

03  – Status trigger

04  -Status doesn’t trigger

Function:

00 -Only use LoRaWAN 01 -Only use D2D

03 -Use D2D&LoRaWAN Uplink

 |

4e (Pulse counter)

| 0100-Clean the count

0101-Stop counting 0102-Start counting

Example:

1. Set reporting interval as 20 minutes.
   ff03b004

   Channel| Type| Value
   ff| 03 (Set Reporting

Interval)

| b0 04 => 04 b0 = 1200s

= 20 minutes

2. Reboot the device
   ff10ff

   Channel| Type| Value
   ff| 10 (Reboot)| ff (Reserved)

3. Set a temperature threshold as below 15°C or above 30°C.
   ff 06 cc96002c0100000000

   Channel| Type| Value

ff

|

06 (Set Threshold Alarm)

| CTRL:cc =>11001100

100 = below or above Min:96 00=> 00 96 = 15°C Max: 2c 01=>01 2c = 30°C

---|---|---
4. Set D2D settings of temperature threshold trigger.
ff 79 01011001

Channel| Type| Value

ff

| 79 (Set D2D

settings )

| Number: 01, temperature threshold trigger Function: 01, only use D2D

D2D Command: 1001=>0110

Historical Data Enquiry
EM300 series sensor supports sending downlink commands to enquire historical data for specified time point or time range. Before that, ensure the device time is correct and data storage feature was enabled to store the data.

Command format:

fd

|

6c (Enquire data in time range)

| Start time (4 bytes) + End time (4 bytes),

Unix timestamp

fd| 6d (Stop query data report)| ff

ff

|

6a (Report Interval)

| 2 Byte, unit:s,

Range: 30~1200s (60s by default)

Reply format:

fc

|

6b/6c

| 00: data enquiry success

01: time point or time range invalid 02: no data in this time or time range

20| ce (Historical Data)| Data time stamp (4 Bytes) + Data Contents (Mutable)

Data format

EM300-DI

| Temperature + Humidity + Interface Type +

Counter + Digital

Note:

1. The device only uploads no more than 300 data records per range enquiry.
2. When enquiring the data in time point, it will upload the data which is closest to the search point within the reporting interval range. For example, if the device’s reporting interval is 10 minutes and users send command to search for 17:00’s data, if the device find there is data stored in 17:00, it will upload this data; if not, it will search for data between 16:50 to 17:00 and  upload the data which is closest to 17:00.

Example:

1. Enquire historical data between 2022/10/28 14:15:00 to 2022/10/28 15:45:00.
   fd6c 64735b63 7c885b63

   Channel| Type| Value
    |  | Start time: 64735b63 => 63466974 =
   fd| 6c (Enquire data in time

range)

| 1666937700 =2022/10/28 14:15:00

End time: 7c885b63 => 635b887c =

 |  | 1666943100 =2022/10/28 15:45:00

Reply:

fc6c00

Channel| Type| Value
fc| 6c (Enquire data in time range)| 00: data enquiry success
20ce 0d755b63 0f01 6a| 02 06000000 00
---|---
Channel| Type| Time Stamp| Value
 |  |  | Temperature: 0f01=>010f=27.1°C

20

|

ce (Historical Data)

| 0d755b63 =>

2022/10/28

14:22:05

| Humidity: 6a=>106=53% Interface Type: 02=Counter; (01=Digital)

Counter: 06 00 00 00=> 00 00 00 06 =6

 |  |  | Digital: 00=> low

Introduction

Milesight provides various types of contact leakage detection LoRaWAN® sensors to suit user applications in smart buildings, asset management, etc. The main differences are as follows:

membrane
Detection

Area

| 1 Spot| 1 Spot| 3m*6mm

cable area

| 400mm*400mm

area

These sensors are mainly designed for liquid leakage detection including water, weak acid, and weak base. These are not suitable for detecting hazardous chemicals, solvents,  oil, fuel, strong acids, or other corrosive liquids. If there is any requirement to detect corrosive liquid, please contact Milesight to customize the leakage sensor.

Installation Guide WS303
There are two leak detection probes behind the device. When the water covers both probes (soaking water length > 1.8 cm), the device will send leakage alarms

WS303 should be placed on sites as follows:

1. Open areas to avoid the metal objects or obstacles to affect LoRaWAN® wireless  transmission;

2. The location where water will reach first or where it is easy to accumulate when leaking. Otherwise, it is recommended to install multiple devices to cover the potential leakage locations.
   WS303 supports installation via two methods

3. Fixed by 3M Tape: apply 3M tape to the back cover, then remove the protective backing and position it on the wall or floor near the detection area, ensuring that the two leak detection probes  are facing the detection area
   Placement Installation: place the device facing up and horizontally in the detection area

EM300-SLD
EM300-SLD leak detection probe has two metal pins to detect the water leakage. When the water touches both metal pins at the same time (soaking water length

1.1 cm), the device will send leakage alarms

The small probe is suitable for below sites:

1. Narrow spaces or corner areas that only accommodate small detection probes;
2. Drain pans, floor drains, pits, etc;
3. Locations where water will reach first or accumulate easily when a leak occurs.

The probe supports being secured either with screws or 3M tape. When installing, ensure the installation surface is smooth and free of debris, and orient two metal pins toward the location where the water may accumulate.

Note:

1. Do not touch the metal pins to metal objects to avoid error alarm report.
2. To ensure best LoRaWAN® communication, keep the EM300-SLD device away from metal objects and obstacles.

EM300-ZLD
EM300-ZLD sensing cable consists of two black sensing wires and polyethylene. When the water cover the cable, touching sensing cables (soaking water length ≥ 3 cm and depth ≥ 1mm), the device will send leakage alarms. It’s important to note that this sensing cable does not pinpoint the exact location of the leakage.

Connect Sensing Cable to EM300-ZLD Device
Connect the connector on one end of the sensing cable to the EM300-ZLD device connector, then tighten the connectors. Please note that the sensing cable comes with only one connector and does not support the connection of additional sensing cables to extend the detection length. If you need to expand the length, please contact Milesight to customize the cable length or purchase a sensing cable with connectors on both ends to replace the default one.

Install the Sensing Cable

1. Select the installation location to detect the leakage. The sensing cable can be wrapped around pipes, routed along to walls or placed on the floors. Ensure that the surfaces of the installation location are clean and free of debris, dirt, adhesive residues, water droplets, and other contaminants.
   Note:

2. Installation location should be away from foot traffic, sharp objects, and areas where heavy items roll, and drop on the cable.

3. Keep the cable away from air-conditioning outlets or moist places to avoid error alarm reports.

4. Install the sensing cable at the designated installation locations. Install cable to floors/walls: attach the sensing cable to the installation location without a gap and fix it tightly with cable clips. Do not fix the cable with glue or metal which may affect the detection sensitivity.
   Install cable to pipes: wrap the sensing cable around the pipe and fix it tightly with cable ties. When installed, the cable can’t be twined or accumulated together
   Note : to ensure the best LoRaWAN® communication, keep the EM300-ZLD device away from metal objects and obstacles. Besides, the connectors should be kept away from the water to avoid error alarm reports.

5. After removing the cable from the leakage location, dry the cable and ensure the leakage status is back to “Normal”. The cable can be reused in other places.

6. Although the sensing cable can resist dust and dirt, it is recommended to clean the cable regularly to maintain optimal detection sensitivity. When cleaning, remove the sensing cable from the EM300-ZLD device connector, then use alcohol or soap water to clean the cable and hang it to dry.

EM300-MLD

• The detection membrane has two sides: one side with black printed lines to detect water leakage, the other side with 3M tape to paste as required. When the water covers two black lines (soaking water length > 1.5 cm), the device will send leakage alarms.
• There is a protective film on the detection side and it needs to be removed before installation.

Connect the Membrane to the EM300-MLD Device
Slide one of the tabs sticking out from the membrane into the connector of EM300-MLD  device, ensure the black lines touch the two metal parts of the connector, then restore  the connector cover back to fix the membrane into the device.

Install the Membrane

1. Select the installation location to detect the leakage. To ensure the most sensitive effect, ensure the installation location is a flat surface without debris, dust and deep gaps. If the membrane needs to be pasted to the installation location, the surfaces should be cleaned and free from dirt, adhesive residue, water drops and other things.

2. Cut the membrane to suit the detection area or keep the whole membrane without cutting. It is necessary to cut the membrane as the below direction to avoid the black lines being disconnected.
   Note : one membrane has two connection tabs and supports to be cut as two pieces for two EM300-MLD devices. If you only use one tab and the other tab is useless, you can also cut it.

3. Put the membrane on the installation location, ensure the detection side touches the detection area or detection object, the membrane is placed flat without crimping. Usually the membrane can be placed under the electrical appliances (refrigerator, washing machine, etc.), while the EM300-MLD and connector can be fixed on the adjacent wall.
   Note : to ensure best LoRaWAN® communication, keep the EM300-MLD device away from metal objects and obstacles.
   Besides, you can tear the other side to paste the membrane to the wall via 3M tape.

4. After removing the membrane from the leakage location, dry the detection side with a soft cloth and ensure the leakage status back to “Normal”. The membrane can be reused in other places.
   Note : do not rub off the black lines on the detection side, as this can reduce leakage detection sensitivity or even disable the leakage detection feature

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