MECCANIXITY NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch RC-33, Brown + White, Pack of 15

What is this?
This recessed door contact sensor works great with any access control or burglar alarm system available.

What will I get?
The magnetic reed switch we provide here is in the size of:
Current: 0.5A
Voltage: 100V
Power Rating: 10W
Action Distance: 10mm
Cable Length: 25cm/9.8″
Total Size: 17mm x 10.6mm/0.67″ x 0.42″ (L*D)
In the package of:
5pcs Brown NC Recessed Door Contact Sensor
10pcs White NC Recessed Door Contact Sensor

Are there any advantages of the product?
They are made of ABS material. N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separates, the circuit is not conductive ( light off ).

How to use it?
1. Drill installation hole with a diameter of 10 mm.
2. The door and window magnet should be installed at the closed position of the door/window/drawer.
3. The magnet part is installed in the movable door and window. The switch part is installed in the fixed door and window frame. The switch part and the magnet part should be aligned as much as possible.

What should I notice?
1. The magnetic door switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!
2. The door magnet should be away from the magnetic field interference source such as a transformer. Otherwise, the working characteristics of the door magnet will be changed and possible wrong actions.