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Compatibility: STS-4xx Series (Full List in Description)
These wired magnetic contact switches are the recessed mount type used by most
security companies. The contact on this magnetic alarm switch is 'Normally
Closed' when it's near the magnetic target. Once a gap of approximately 1"
occurs, the switch will open and the alarm is triggered.
This sensor supports having the alarm system tell you, when you are arming the
system, if you have left a door or window open. You will get a notification on
the screen of unclosed doors and windows as well as a voice notification from
This wired door sensor uses 2 wires in total.
Two wires are for power (+) and (-).
Run the reed switch through a hole in the door/window or the frame. Drill a hole
where the magnet will touch the reed switch when the door/window is closed.
-- Sensor Specifications --
Voltage: 12v DC
Current: 2-5mA (Standby); 20mA (Alarming)
Best Working Temperature: Unknown
-- Sensor Dimensions --
Reed Switch: Diameter: 0.88 x 0.88 inches (2.22 x 2.22 cm)
Wire Length: ~11 inches (wire length varies from shipment to shipment)
Magnet: Diameter: 0.88 x 0.88 inches (2.22 x 2.22 cm)
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