Magnetic Contact – Door Window Magnetic Contact Wired Sensor Detector Switch for Home Garage Alarm Security

Easy to install and use. A good replacement for the old contacts. Simple to install no hassles
Protective device monitors the opening and closure of doors and windows
High quality magnetic sensor contacts with strong magnetic, sensitive respond and long durability
The wired part often be installed on the fixed door frame and the mating part is mounted at the corresponding place on the door
This is a set of magnetic detecting switch used to protect doors and windows for the most part