Haosie Wired Window Door Contact Sensor, 10pcs Wired Door Sensor, White NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System

Haosie Wired Window Door Contact Sensor, 10pcs Wired Door Sensor, White NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System

• PRINCIPLE - The magnets are close together and the switch is off. The magnets are close together and the switch is off. And the switch and magnet are separated, and the switch is open.
• EASY TO INSTALL AND USE - The window door sensor don't need the external power supply, beacuse the GND and N.C ports of wired or wireless alarm control panel can directly connected.
• MATERIAL - The switch housing is made of ABS flame retardant material and reed switch, high temperature resistant, not easy to deform. Sensitive response, fine workmanship ensures window switch reliability.
• APPLICATION - Wired door window sensor is mainly used for door and window safety. But not suitable for iron doors, it will reduce the magnetism of the wired door window sensor.
• AFTER SALES - Your satisfaction is our greatest wish! If you have any questions, don't hesitate to contact customer service, our customer service will reply to you within 24 hours!