The ANWETECH AT-M231 LoRaWAN SOS Button is a battery-powered wireless emergency alarm device designed for one-button manual alarm transmission through a LoRaWAN network.
When the red SOS button is pressed, the device sends an alarm through a compatible LoRaWAN gateway to a cloud or local management platform. The device also supports low-battery reporting, anti-dismantling monitoring, local buzzer indication and LED status feedback
The AT-M231 LoRaWAN SOS Button provides a simple wireless method for manually transmitting emergency alarms from fixed locations.
The device remains in a low-power standby state during normal operation. When the SOS button is pressed, it wakes and transmits an alarm message through the LoRaWAN network. If communication is temporarily unavailable, the device continues attempting to report according to its internal communication logic.
A typical system consists of:
AT-M231 SOS Button → LoRaWAN Gateway → Network / Cloud Server → Application or Monitoring Platform
The AT-M231 includes a built-in LoRa antenna and a 3.6 V / 8000 mAh Li-SOCl₂ primary battery, allowing wiring-free installation. It can also report tamper and low-voltage conditions to the management platform.
These functions are stated in the product manual.
| Parameter | Specification |
|---|---|
| Model | AT-M231 |
| Product Type | LoRaWAN SOS Button |
| Alarm Input | Press red SOS button to trigger alarm |
| Wireless Protocol | LoRaWAN 1.0.2 / 1.0.3 compatible |
| Data Rate | 300 bps to 5.4 kbps |
| Frequency Options | CN470–510 MHz |
| EU863–870 MHz | |
| US902–928 MHz | |
| AS920–923 MHz | |
| AS923–925 MHz | |
| AU915–928 MHz | |
| KR920–923 MHz | |
| Maximum Transmit Power | 19 dBm |
| Receiver Sensitivity | -141 dBm at SF=12 |
| Antenna | Built-in LoRa antenna |
| Battery Type | Li-SOCl₂ primary battery |
| Battery Capacity | 3.6 V / 8000 mAh |
| Standby Current | ≤10 µA |
| Transmit Current | ≤125 mA |
| Operating Temperature | -10°C to +50°C |
| Operating Humidity | 10% to 95% RH, non-condensing |
| Dimensions | 86.9 × 86.9 × 26 mm |
| Installation | Wall-mounted or desktop placement |
| Application Port | FPort 44 |
The manual states that battery operation can exceed five years when one report is transmitted per day. Actual service life depends on factors including alarm/report frequency, retransmissions, radio conditions and environmental conditions.
Not applicable.
The AT-M231 is a manual emergency alarm transmitter, not an automatic fire or hazard detector. The product manual does not specify a fixed LoRaWAN transmission distance; therefore, no transmission range is claimed here.
Actual wireless communication depends on the installed LoRaWAN gateway, radio environment, frequency plan, building structure and network configuration.
The AT-M231 uses a built-in battery and built-in LoRa antenna, so the device itself does not require conventional field wiring for normal alarm communication.
Alarm transmission sequence:
Press SOS Button → AT-M231 Sends LoRaWAN Alarm → LoRaWAN Gateway → Network / Cloud Server → Monitoring Platform
The gateway and network server must use a frequency plan compatible with the AT-M231.
The manual defines the application payload on FPort 44, including alarm state, tamper state and battery-voltage information.
The AT-M231 can be installed using the supplied back plate for wall mounting or positioned on a desktop according to the project requirements.
Before commissioning:
The local LED or buzzer indication alone does not confirm that the management platform has successfully received the alarm.
According to the product manual, typical application locations include:
| Item | Quantity |
|---|---|
| AT-M231 LoRaWAN SOS Button | 1 |
| Back Plate | 1 |
| Screw Set | 4 |
| User Manual | 1 |
The screw set consists of two long screws and two short screws with the supplied plastic accessories.
