Garosa Door Magnetic Contact Wired Sensor Detector Switch Window Sensing for Garage/Warehouse/Door Factory Alarm Security

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