1Reliable Material: Made of iron, the door window switch housing is robust and reliable. It features a high temperature and deformation resistant leaf switch, ensuring the longevity of the sensor. 2Normally Closed (NC): The circuit is switched on (light is on) when the switch is near the magnet, and the circuit is switched off (light is off) when the switch is separated from the magnet, providing easy and efficient control. 3Transmission Distance: With a transmission distance of 1020mm, the contacting point of the magnetic switch reacts quickly and detects accurately, ensuring effective operation. 4Working Conditions: Designed for a voltage range of DC 12V24V when the magnetic door is powered. The load current should not exceed 100mA, thus maintaining safety and efficiency. 5Wide Application: The magnetic door switch is suitable for all access control and anti theft alarm systems. It can be installed on wooden or aluminum alloy doors and windows, catering to a variety of needs. 2 x Pairs of Magnetic Reed Switch