1Sturdy Material: Made of high strength aluminum alloy hosing, the magnetic switch is resistant to high temperatures and deformation, enhancing its durability and longevity. 2Enhanced Control: The reed switch features a normally closed design that completes the circuit (and lights up) when the switch is near the magnet and breaks it (turning off the light) when the switch is removed from the magnet, ensuring simple yet effective system control. 3High Accuracy: The recessed magnetic switch features fast and precise response, with a transmission distance of 10 to 20mm, designed for superior accuracy and reliability. 4Powerful Performance: Power controlled at DC 12V24V when the magnetic door is energized, ensuring the load current does not exceed 100mA for safety purposes. Red wire for positive polarity and white wire for negative polarity. 5Versatile Use: Suitable for all access control and anti theft alarm systems, the switch can be installed on wooden or aluminum alloy door an and peace of mind. Item Type: Recessed Magnetic Switch Connection Method: Normally Closed (NC: Conducts when door contacts) Rated Voltage: DC12-24V 2 x Pairs of Magnetic Reed Switch