3 pairs)Wired Plastic Magnetic switch Door Window Open detector NC/NO optional output Alarm accessories Chest Lamp Sensor
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Switch Type: NC/NO(normal close type), circuit is connected when magnet is near the switch.
The reed switch is an electrical switch operated by an applied magnetic field.
Designed for use with alarm systems. Great for use in family and factory window, door. etc.
With double-sides tape design that for easily install.
Unit Type: lot (3 pair/lot) Package Weight: 0.2kg Package Size: 8cm x 4cm x 2cm (7.09in x 5.51in x 1.57in)
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