Fielect 5pcs MC-31 Surface Mount Wired N.O. Door Contact Sensor

Specifications: NO means Normally Open: when the magnet separates, the circuit is conductive( light on ); When the magnet together, the circuit is not conductive ( light off ). WIDE APPLICAIONS - Work with all access control and burglar alarm systems. Can be installed in wooden or aluminum alloy doors and windows. PLEASE NOTE - A magnetic door contact can only provide a switching signal to the device. It cannot directly load the power supply and cannot be directly connected to the lamp. Parameters: Model: MC-31 Contact Type: NC(Normally Close) Sensing Distance:20 mm Housing Material: PVC Package Content: 5 x MC-31 Magnetic Reed Switch Installation Instructions 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. 4. 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.