Features: 1) Wireless installation, wireless transmitter, DIY
project 2) High quality PVC material for the plastic covers 3) High
sensitive chips inside and strong anti-interfere 4) Battery supply
power 5) LED indicator for Low voltage 6) Strong anti-interfere7)
DIY project 8) The gap between the two parts is apart beyond 15 -
20mm, it will be triggered and send signal to the main panel to
alarmSpecification 1) CE and CCC certified 2) Power: 12V battery 3)
Working frequency: 315MHz/433MHz 4) Gap for triggered, >15 -20mm
5) Stand-by current: 0.01W 6) Alarm current: 0.09W 7) Working
temperature: -10 ~ 50degree C 8) Relative humidity: