Features: 3.Made of Flame retardant ABS Plastic.4.Using the power: 50W maximum load energy saving lamps 600V/2A.5.This switch is normally Closed type, when magnet is closed ,the lamp is ON,when the magnet is remove, the lamp is OFF.6.If installed it on both sides of the door, When open the door,the lamp is OFF, when close the door,the lamp is ON.7.Suitable for doors, cupboard door, closet etc.Installation:1. Sensor (with line side) should be installed on the door frame,the magnetic side (without cable side) mounted on the door.2. Sensors and magnetic side must be installed parallel to the door, besides, the edge distance gap between sensors and magnet should not exceed 10MM3.Please be sure to install the load (fluorescent, energy saving lamps, spotlights) first and then supply power.4. Cant use multimeter to test the door magnetic switch is on or off.Specifications:Material: Flame retardant ABS PlasticColor: White BlueVoltage: AC110-220VCable Length: about 280mm/11.02 InchSwitch size: about 26x12mm/1.02x0.47 Inch (L x Dia)Magnet size: about 11x12mm/0.43x0.47 Inch (L x Dia)Installation: DrillingSwitch type: Normally ClosedLife: about one million timesWeight: 15gPackage include:1 x Normally Closed Magnet Switch