Wired Door Window Sensor Magnetic Reed Switch NC Recessed for Home Alarm System (Pack of 10)

Features: Magnets are usually close to each other, which is normal statement. Close = short circuit = create a for the current. The magnets are close together and the switch is off. And the switch and magnet are separated, and the switch is open. No external power supply is needed, and the GND and N.C ports of wired or alarm control panel are directly connected. Not suitable for iron doors, it will reduce the magnetism of the sensor. Specifications: Working Distance: 15mm + 5mm Switching Pressure: 100VDC Load current: 300 mA Life: 1 million times Switch Output: NC (Normally Closed) Package Weight: 91g/3.2oz Package List: 10 Pair * Door Window Sensor

• Widely Used: This normally closed door switch works with access control or burglar alarm system.
• NC Means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off )
• Easy to Use: No external power supply is needed, and the GND and N.C ports of wired or alarm control panel are directly connected.
• Note: This door switch not suitable for iron doors, it will reduce the magnetism of the sensor.
• Package List: 10 Pair x Door window sensor