2.4GHz TTLOCK Door Sensor Door Contact Detection Open Close Status Works8131
1. Real-time door status monitoring
2. Unlock record tracking
3. Automatic lock support (AVAILABLE When lock has autlock function only)

Power supply:CR2032 battery(not included)
Working voltage:3V
Standby current:Less than 5uA
Detective distance:Less than 22mm
Compatible deavices:All ttlock smart devices which support add door sensor in the setting option.
Note:that door sensor cannot be used itself independently. It's used with compatible for TTLOCK DEVICES.
Colour:White
Material:ABS
Size:41x27x11.5mm;41x 10 x11.5 mm

Package Contents:
1 * Sensor
1 * Receiver