1、Flame Retardant: Made of ABS flame retardant material, resistant to high temperatures and deformation, ensures durability for long term use. 2、Recessed Mount: 10 pieces of MR‑35B magnetic reed switches are designed for alarm systems. Widely used for alarm systems on window, doors, and cabinets. 3、Switch Specifications: Operates on 0.5A maximum switch current, DC 100V voltage, 10W rated power. It has a functional range of between 15mm to 20mm. 4、Normally Closed: NC indicates normally closed. The circuit is on (light on) when the magnet is together, and the circuit is off (light off) when the magnet is separated. 5、Wide Application: Suitable for all access control and anti theft alarm systems. Can be installed on wooden or aluminum alloy doors and window. Item Type: Magnetic Reed Switch Model: MR-35B Material: Flame retardant ABS shell Connection Type: Normally Closed (When the door magnet is drawn together, it is in a conductive state) Voltage: DC100V Rated Power: 10W 10 x Pair of Reed Switches