model: jy-jz-013, shutter door sensor, which is specially designed to prevent any illegal entrance through shutter door, it will send out alarm signal to alarm host when the sensor is triggered.
widely used at garage, home, shop, school, hospital, factory, warehouse, bank, government, etc.
• wireless installation, wireless transmitter, diy project
• high quality pvc material for the plastic covers
• high sensitive chips inside and strong anti-interfere
• battery supply power
• led indicator for low voltage