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Door magnetic switch sensor.
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Yootop 5 sets recessed wired magnet reed switch window door magnetic contact sensor alarm white.
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The other half is a magnet.
Window door alarm toeeson 120db pool alarm for doors magnet triggered home security burglar alarm for doors and windows.
Yootop 5 sets recessed wired magnet reed switch window door magnetic contact sensor alarm white.
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Gufastore 10pcs surface mount alarm 10w 100v 0 5a in max magnetic contact ideal for door window security with lead wire and 3m.
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Wire contacts to an alarm system to alert when doors or windows are opened.
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How to use a magnetic door switch sensor with arduino.
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The alarm will activate when the magnet is pulled away by the opening door or window.
Mount the magnet to the door or window and mount the switch to the frame.
You can attach alarm contact sensors to any door or window in your house or apartment and when armed you ll get instant alerts on your phone and tablet whenever they open.
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Spdt switches connect to an alarm system and to another device such as a motion detector.
When the magnet is less than.
Normally the reed is open no connection between the two wires.
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Gufasotre 5pcs recessed door contacts nc security alarm window sensors with magnetic reed switch.