Wireless Door Window Magnetic Contact Sensor for Home Security

Product Description:
1. Wireless door magnetic contact sensor
2. Wireless distance: open area: 150m
3. Working distance: ≥15mm
4. Power: 12V 23A (alkaline battery)
5. Emitting frequency: 433MHZ
6. Programme code: 1527
7. Low battery remind function
8. Case material: ABS