UHPPOTE Normal Closed Wired Screw-Terminal Surface-Mount Magnetic Contact for Window Door Security (Pack of 5)

Amazon.com Price: $11.90 (as of 10/08/2020 22:10 PST- Details)

Switch Type: NC (Normal closed type)
This Contact Works with Any Access Control or Burglar Alarm System Available
This contact can’t connect directly to power, it works with your alarm system provide a switch signal. Working current under 12V

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