Feature: 1. Premium Material: The sensors are made from ABS flame retardant material, ensuring their durability, high temperature resistance, and deformation resistance. 2. Wide Use: The sensor comes with a packing content of 10 switches, designed specifically for alarm systems. Widely used in securing window, door, and cabinet contacts. 3. High Performance: The switch also offers a maximum switching current of 0.5A, with a voltage rating of DC 100V, a rated power of 10W, and an action distance of 15‑20mm. 4. Normally Closed Design: NC indicates normally closed: circuit conducts (light on) when magnetic contacts are together, and circuit does not conduct (light off) when magnetic contacts separates. 5. Embedded Installation: The sensors are versatile enough to be installed on wooden or aluminum alloy doors and window, providing you with a convenient and easy to use experience. Specification: Item Type: Magnetic Door Sensor Product Model: MR-33C Product Features: Flame Retardant ABS shell Connection Type: Normally Closed (When the door magnetic contacts are closed, it is in the conductive state) Voltage: DC100V Rated Power: 10W. Package List: 10 x Pair of Switch Note: The door magnetic induction can only provide switch signals, cannot directly load power, nor can directly connect lamps