The device is equipped with a reed sensor, which can be used to detect the status of the door and window. Through the built-in wireless module, it can achieve wireless alarm and other functions. It uses the SX1276 wireless communication module.

The device is equipped with a reed sensor, which can be used to detect the status of the door and window. Through the built-in wireless module, it can achieve wireless alarm and other functions. It uses the SX1276 wireless communication module.
Electric
| Input Power | 2pcs 3.0V CR2450 button battery (Single CR2450 battery capacity 620mah) |
| Working Voltage | DC 2.4V~3V |
| Standby Current | 12uA/3.0V |
| Transmitting Current (max) | 120mA/3.0V |
| Receiving Current (max) | 11mA @3.0V |
| Low Voltage Threshold | 2.4V |
| Battery Voltage Measurement Accuracy | ±0.1V |
Frequency
|
TX Power |
US915 20dbm; AS923 16dbm; AU915 20dbm; CN470 19.15dbm;
EU868 16dbm; KR920 14dbm; IN865 20dbm; |
|
Rx Sensitivity |
-136dBm
(LoRa,Spreading Factor=12,Bit Rate=293bps ) -121dBm (FSK,Frequency deviation=5kHz, Bit Rate=1.2kbps) |
| Antenna Type | External antenna |
| Communication Range | Up 10 km, the actual transmission distance depends on the environment. |
| Data Transfer Rate | 0.3kbps~50kbps |
| Spread Technique | LoRa/FSK |
|
Available Frequency |
EU863-870,US902-928,AU915-928,KR920- 923,AS923-1,AS923-2,AS923-3,IN865-
867,CN470-510 Configured before shipment |
| Main Body Dimension | 57mm x 38.05mm x 15.2mm |
| Magnet Dimension | 42.5mm x 13mm x 12mm |
| Weight | 43.8g |
| Operating Temperature | -20℃ ~ 55℃ |
| Environment Humidity Range | <90% RH (No condensation) |
| Storage Temperature | -40℃ ~ 85℃ |