5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black, Magnetic Door Sensor, Normally Closed Magnetic Switch

Switches work great, like the NO or NC combination, was unsure of what I needed. Adapted to control travel of gate arm actuator.

All 3 failed. 1 failed to work immediately. The second showed 2 volts leaking through in the closed state when connected to a 12v source. The third lasted 2 days until it stopped turning off.Very disappointed, will look elsewhere.

Works as intended. I use these on my camper doors on my truck. I had the rear and two sides all wired up to the trunk input of my viper paging alarm. If anyone opens it I’ll get a notification on my remote on my keychain. Switches are simple use the black and blue wires. When the magnet are next to each other it opens the circuit. Once they break it will send ground.

The media could not be loaded. The lights came with everything I needed to mount, route and switch with several options for each. Installation was straight forward and required little more than a dash of common sense to perform. However, anything Beyond a standard install has its challenges.As an example, I did not want to use the provided, physical on/off switch. I preferred a magnetic switch so the unit would come on when I opened the cabinet door. While this was accomplished easy enough, the lights use very, very thin (22 gauge) wire. Splicing, connecting and soldering proved difficult. If you take your time, it's very doable. Just know, it is finicky and there isn't much "wire slack" if you make a mistake. As you see in the video, the lights as well as the secondary purchased magnetic switch works very well.

I didn't notice they are normally closed, just had to change my code to work correctly.

Nice that these magnetic switches can be configured in NO or NC. Screws included for hard mount installation, no sticky pad on backside of them. Little trick with these is to use double sided tape for initial install to align them, when set right then drill for screws. Good replacement for worn out magnetic door switch on my coach.

Planned on using one to activate 2 12v led strips in my camper's pantry door. All of them failed within 3-4 activations. Not even worth the time to drop off at a UPS store for the refund. DO NOT BUY!!

Work perfectly. Used with dc motorized arduino project to inform what directions and when to stop. Zero complaints and work exactly like I wanted them too.