ARWIN SENSO8 LoRaWAN IAQ Sensor User Guide
- June 3, 2024
- ARWIN
Table of Contents
ARWIN SENSO8 LoRaWAN IAQ Sensor
Introduction
SENSO8 LoRaWAN IAQ Sensor is an LPWAN wireless indoor air quality sensor which can detect indoor temperature, humidity, and a wide range of gases like carbon dioxide, ammonia and hydrogen sulfide. The sensor reads the environment data and uploads the data to the LoRaWAN server with a simple, open API.
The user guide is applicable for the SENSO8 LoRaWAN IAQ Sensor models:
- LRS10701-xxxx
Sensor Setup
- Make sure the sensor is not connected to any DC power supply.
- Unfasten the screws and open the sensor’s cover.
- Connect the wires connecting to the DC power supply to the terminal block on the bottom of the sensor or insert two ER26500 Li-SOCl2 batteries into the battery compartment.
- Put on the cover and fasten the screws on the corners.
- If DC supply is used, connect the wires from the terminal block a DC power supply, the LED indicator on the top cover will light up. For battery powered models, press and hold the button on the side for 3 seconds to power on the sensor.
- On power on, the sensor will send a data report. Check the server backend or dashboard to make sure the connection has been established and data can be successfully uploaded.
Installation
- Perform a site survey and make sure the SENSO8 IAQ sensor has a good LoRaWAN network coverage.
- Mount the base of the sensor to the wall with the double arrows pointing upwards, and fix it with 4 screws.
- Attach the sensor main body to the base in the proper orientation as shown below.
- Slide the sensor main body down until it is locked to the base.
- Lock the sensor main body with a screw.
- Power on the sensor
- Plug the DC adaptor to the AC main, the sensor will power on automatically on DC supply (for DC supply models), OR
- Press the multi-function button for 3 seconds to power on the sensor (for battery operated models).
- On power on, the sensor will publish a data report to the LoRaWAN server. Check the server backend or dashboard to make sure the connection has been established and data can be successfully uploaded.
Operating Instruction
Power On
- For DC supply models, the sensor powers on automatically when connected to the power supply.
- For battery powered models, press the multi-function button for 3 seconds to power on the sensor.
- The LED indicator will light up and the sensor will upload a data message to the LoRaWAN server.
Power Off
- Press and hold the multi-function button 5 seconds, the LED indicator will flash 3 times to indicate that it is shut down.
Report Latest Data
- Press the multi-function button briefly, the LED indicator will flash once. The sensor will upload the latest sensor data to the LoRaWAN server.
Sensor Operation
The sensor performs a sensor measurement every minute in the background. If
the reading exceeds either one of the thresholds, the sensor will send an
uplink data to the network server immediately with the corresponding alert.
Otherwise, the sensor will go back to sleep mode. When the data upload
interval is reached, the sensor will send an uplink data with the latest
sensors’ reading.
Configurable Sensor Settings
The following sensor settings are configurable via downlink data. The details
of the data payload format can be found on the SENSO8 LoRaWAN IAQ Sensor Data
Payload Format Document.
| Setting | Default Value | Unit |
|---|---|---|
| Data Upload Interval | 600 | second |
| High Temperature Threshold | 30 | °C |
| Low Temperature Threshold | 18 | °C |
| High Humidity Threshold | 70 | % |
| Low Humidity Threshold | 40 | % |
| Carbon Dioxide Concentration Threshold | 1500 | ppm |
| TVOC Concentration Threshold | 435 | ppb |
| Formaldehyde Concentration Threshold | 200 | ppb |
| Ammonia Concentration Threshold | 2000 | ppb |
| Hydrogen Sulfide Concentration Threshold | 2000 | ppb |
| Carbon Monoxide Concentration Threshold | 12400 | ppb |
| --- | --- | --- |
| Nitrogen Dioxide Concentration Threshold | 360 | ppb |
| PM2.5 Concentration Threshold | 56 | ug/m3 |
| PM10 Concentration Threshold | 254 | ug/m3 |
| LED ON/OFF Status | ON | – |
LED Indicator
Device Status
| Event | LED Pattern | Description |
|---|---|---|
| Powered On | Blue LED on | Device powered on, and uploading the first data. |
In OTAA mode, the LED will stay on until the sensor joined the network.
Powered Off| Blue LED flashes 3 times| Device powered off.
Report Latest Data| Blue LED on| The IAQ sensor is uploading the data
when the function button is pressed.
Error Status
If the sensor is configurated for the OTAA activation mode and it cannot
join the LoRaWAN network in 3 minutes after power up, the LED indicator will
be flashed in Blue for 2 minutes.
Air Quality Index Indicator
The LED indicator reports Air Quality Index during normal operation. The Air
Quality Index (AQI) provides an indicator of the quality of the air and its
health effects with a range of 0 to 500. The
table below LED indicator colour and the corresponding AQI.
On battery powered sensors, the LED indicator flashes every 5 seconds. On DC powered sensors, the LED indicator has a breathing effect.
Troubleshooting Guide
| Symptom | Fix |
|---|---|
| The LoRaWAN network server cannot receive data from the sensor. | Check the |
configuration (activation mode, frequency plan, device info and all security
key) on the LoRaWAN server and the sensor. If there is any mis-match, the data
cannot be sent to the LoRaWAN network server.
The sensor cannot be configured via downlink
command.
| Check the downlink command is sent as
CONFIRMED downlink message.
The alert is not cleared when the reading is returned to the normal level.| For each alert, there is a hysteresis setting to prevent the alert from triggering repetitively when the reading fluctuates around the threshold.
Example :
If the high temperature threshold is 30, it will trigger an alert when the temperature is higher than 30. The alert will be cleared when the temperature falls below 29 (hysteresis is 1)
rather than 30.
Regulatory Compliance Information
FCC ID: 2AMWTLRS10701
MADE IN CHINA
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Compliance
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20cm between the radiator and your body. This transmitter
must not be co-located or operating in conjunction with any other antenna or
transmitter.
Revision History
| Revision | Description | Date |
|---|---|---|
| 1.0 | Initial release. | 10 Dec 2021 |
| 1.01 | Added AQI indictor colour table. | 28 Jan 2022 |
| 1.1 | Separate the user guide into NB-IoT and LoRaWAN versions. |
Add sensor operations and configurable sensor settings.
| 20 Jun 2022
1.2| Add Regulatory Compliance Information section| 21 Oct 2022