WESUA 5 Pack NC Magnetic Switch Contacts Door Sensor for Home Alarm Security System

Magnetic contacts is widely used for alarm system(panel) to detect state of door. It consist of a reed switch part and a magnet part . When door closed, reed switch is effected by magnet and turn ON; when door open, reed switch is effected by magnet and turn OFF, trigger alarm.
Contact type : NC (normally closed),switch OFF when door is opened
Material: ABS plastic
Color: white
Pack: 5pairs/bag
Operation gap : ≥ 20mm Mounting type : Surface mounting
Max. voltage : 28V DC
Max. current : 0.2A
Max. load : 3W
Material : ABS plastic