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

Work perfectly. I used them in my under the stairs closet. I installed some LED light strings on the ceiling in the closet and installed this switch on the wall, wiring it through a MOSFET power relay. When you open the closet door the lights automatically turn on, and they turn off when you close the door. It seems like the lights are always on because as soon as you open the door its illuminated, but of course that's not the case. I didn't need 10 or 15, so this was the only listing I found that had only a couple for a good price. The magnetic sensors already being wired made installation a breeze.

Perfect, I loved.

These little switches caused me so much headache, because they just quit working out of nowhere. The voltage and amperage were well within specs. I bought six because I needed four. I wired them in first by just twisting the wires. They worked. I then soldered and heat-shrunk the connections. They worked. I mounted them to the doors and cabinet, but one of them didn't work. I replaced it, and one of the others quit working after a day. I was convinced for a while that something was faulty with my wiring or mounting. Turns out these are junk.

So far so good. These seem to be a replacement for other switched I’ve purchased. They are physically the same size and operate the same. Word of warning though, do not over current these or they will likely be damaged.

Worked perfectly! I have a security system with door/window open alarms. One of the sensors got damaged and these spliced right onto the alarm unit meaning I don't have to replace the entire alarm. I only needed to replace the damaged sensor end. Saved me a bundle.

These switches are in the closed position when the magnet is close and opens when the magnet is about 3/4" away. All five switches worked perfectly and the included double-sided tape made installation easy.

Worked perfectly

The sensors are paired with weak magnets that will only work when mounted in a particular orientation. In the correct mounted orientation the profile looked at from the sides is a U. None of my installs allowed that orientation. I got it to work by using flat magnets from other brands.

One was broken and another one had a huge sensing delay… Although there was a problem the item could be returned without any issues even with a peace of wire stripped off to test them… Product was below average for my use case, but the way it was handled afterwards was easy and costumer friendly! 5 stars for service, Making an average of 4 stars in total!

Tested all OK on receipt, as others not, operation is quite close (~5mm). Bought nc/no as description of others ambiguous

Fais le job

En av magnetströmbrytarna fungerade inte!

Alles top! Funktioniert alles wie es soll.