Magnetic Reed Switch Normally Open and Normally Closed NC NO Magnetic Contact Sensor Alarm Magnetic Door Switch,Proximity Switch for Door Alarm, Window Safety, Black,Pack of 2 with 40 Screws

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• 【Reed Switch Application】Magnetic door contact reed switch, suitable for door and window alarm sensors, alarms, LED switches, relays, GPS low-voltage equipment;suitable for pickup trucks with sliding rear windows; It is suitable for magnetic windows, doors, cabinets etc. Effective anti-theft measures,Ideal for door, window security.
• 【Magnetic Switch Contact principle】 NC/NO/COM: NC represents normally closed. When the magnets are together, the circuit conducts electricity; When the magnet is detached, the circuit is not conducting. NO means normally open: when the magnet is separated, the circuit is conducting; When the magnets are together, the circuit is not connected.COM: Common line.
• 【Safety Protection】:NC: alarm when door is closed,NO: alarm when door is opened, Magnetic Contact sensors can be added to an existing wired Alarm Systems. Wired alarm host needs to support NC wired detectors. Connect two wires to the door magnetic and wired host respectively.Reed switch can be used in home security and burglar alarm system. It is an ideal choice for wooden doors and windows in homes and factories.
• 【Specification parameter】Surface Mount Magnetic Reed Switch.Color: black; Material: fireproof ABS material;Trigger Range: 10-20mm;Maximum Switch Voltage: 100V DC.Maximum switch current: 0.5A.Quick response and rapid alarm,When the door sensor is separated, a signal is immediately sent to the host. After receiving the signal, the host sends an alarm message to the user.
• 【Package Content】: 2 Sets x Magnetic Door Swith; Size: 55*12.5*11.5mm / 2.17"" x 0.45"" x 0.45""(L*W*H) a package of screws for mounting on wood only. Installation type: surface mount with screws; Magnetic Reed Switch can not connect directly to power, It needs to work with the alarm system. It provides a switching signal.If you have any questions, please email us.