POPETPOP 3 Sets Door Magnetic Alarm Motion Wired Smart Sensors Window Door Sensor Magnets Outdoor Door Alarms Magnetic Door Alarm Silver Zinc Alloy

zinc alloy
Door magnetic alarm system:this works with any entry management or alarm system obtainable,magnetic door alarm
Door magnetic alarm:nc means usually closed, when the magnet collectively, the circuit is conductive (gentle on),door magnetic alarm system
Magnetic door sensors:the rolling door is designed to be used with window and door alarm methods, akin to storage, industrial warehouse and outlets, and so on,door magnetic alarm
Door alarms:nc means usually open, when the magnet separate, the circuit is conductive( gentle on ),door magnetic alarm
Door sensors:the half is put in on the mounted door and window body,door magnetic alarm