Model: jy-mc-012, door & window sensor is combined by two parts, when the gap between the two parts are apart beyond 15 -20mm , then it will be triggered and send signal to the main panel to alarm. It is very popular and economical component in the alarm system, which is widely used for door, window, drawer, cabinet, 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