10 Pair RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm Mag...
$18.60
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Wired Window Door Contact Sensor, 10pcs Wired Door Sensor, White NC Recessed ...
$20.57
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About this item
APPLICATION - Wired door window sensor is mainly used for door and window safety. But not suitable for iron doors, it will reduce the magnetism of the wired door window sensor. PRINCIPLE - The magnets are close together and the switch is off.
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