Your cart is empty.
Your cart is empty. 1.Self-Adhesive Mount, Screw Surface Mount contact, ABS Housing. Long wire lead that can side mounted.
2.Switch Type: NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ).
3.Work as an anti-theft alarm, ideal for wood door and window.
Nc: when the magnet is near, the circuit is on;
When the magnet moves away and the circuit is Off.
No: When the magnet is near, the circuit is off,
When the magnet moves away and the circuit is ON.
jimkski
Reviewed in the United States on June 18, 2024
tested with 9v battery powering a laser level diode (3 - 12 v) and the switch gets stuck closed. Takes it between 10-60 seconds to open again. With arduino type voltages and currents (3-5v) they work beautifully, instant on/off cycles.
Luke Crawford
Reviewed in the United States on October 24, 2024
I don’t even turn on my security system because of how unreliable these are
Glen Colby
Reviewed in the United States on July 7, 2023
All of my switches are N/O switches, not N/C switches. Waste of money
Harry
Reviewed in the United States on March 24, 2023
These work very well
coliveira10
Reviewed in the United States on February 18, 2023
Poor quality, Suppose to be NC, some were open from the start, and others failed after first contact.Worse reed contacts I've ever used, GARBAGE!!!!
Chuck Giddens
Reviewed in the United States on April 16, 2023
3 out of 10 of these do not work properly. Spend more money if you want a reliable part.
AJB
Reviewed in the United States on November 10, 2022
Work fine. Using one on a Raspi Pi computer. Don't see any contact bounce.
Recommended Products
