3 Sets White Magnetic Switch Wiring NO/NC Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System

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.

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.

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.

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.

Fast shipping. Great mounting options. Double check your voltage and amp/milliamp requirements before ordering.

Only one of the 3 worked. I one needed 1, but i bought 3 to have spares, so the one worked great and I repaired my project.

Item used to switch LED string lights in a cabinet when the door is opened or closed. Works well and sensitivity to magnet proximity is not critical.