Wale Security WL-19DW New 433 MHz Door Magnetic Contact Sensor Detector with Low Battery Remind

Features: 
1. Wireless door magnetic contact sensor
2. Wireless distance. open area: 150m
3. Working distance: ≥15mm
4. Power: Alkaline battery (2* 1.5V AAA battery)
5. Emitting frequency: 433MHz
6. Programme code: 1527
7. Low battery remind function
8. Two way function
9. Case material ABS
10. Battery life: 10-12 months

Package Included:
1* door sensor
1* double-side tape
1* battery