Magnetic Reed Switch Alarm Surface Mount Wired Contact Sensor Connect to the alarm.
Sharp alarm will be heard when someone opens window or door in arming status,The reed switch is an electrical switch operated by an applied magnetic field. Keep your house safe with this door security alarm.

1.By screws to install, High-Quality Zinc Alloy.
2.The magnetic switch alarm is with durable zinc alloy housing for better rust resistance
3.Switch Type: NO means Normally Open: when the magnet separate, the circuit is not conductive( light on ); When the magnet together, the circuit is conductive ( light off ).
4.Work as an anti-theft alarm, ideal for wood or metal door and window.

Specification:
Model: MC-52
Material: Zinc Alloy
Color: Silver Gray
Max Power: 10W
Max Voltage: 100V
Max Current: 0.5A
Min Temperature: -22℉
Max Temperature: 140℉
Actuation Distance: 20-30mm
Contact Type: NO
Size(Approx): 50 x 20 x 10mm(L*W*H)

Package Content:
2pair x Magnetic Door Switch.

Note:
1: Please install on the back of the door, The door and window magnet should be installed at the closed position of the door/window/drawer.

2: The magnet part is installed on the movable door and window. The switch part is installed on the fixed door and window frame. The switch part and the magnet part should be aligned as much as possible.

3: The door magnet should be away from the strong magnetic field interference source such as a transformer. Otherwise, the working characteristics of the door magnet will be changed and possible wrong actions.

4: Door magnetic can only provide switching signal, can not be directly loaded, need to be connected with the power supply or lamps and lanterns into a set of system.