5 Pack NC Magnetic Door Contact Sensor Surface Mount Alarm
• Sensor Technology: Magnetic. • Power Source: Battery Powered (Alarm Dependent). • Compatible with alarm systems. • Designed for use with compatible wired alarm systems. • Compact white housing. • Surface mount installation.
Magnetic Garage Door Alarm Contact Switch Sensor w/ L Bracket Overhead Door
Used for overhead doors in both industrial and residential situations where a wide gap is present. Adjustable with L bracket to fit most door-channel widths and easy installation. Alloy zinc material case make it quite sturdy.
5 Pack Magnetic Contacts Switch Window Door Sensor for Alarm System NC 3/8″
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. Compatible Devices Alarm Panels.
5 Pack NC Magnetic Switch Contacts Door Sensor for Home Alarm Security System
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. Unit Count 5.0 Count.