10pcs Surface Mount Alarm 10W 100V 0.5A in Max Magnetic Contact Ideal for Door Window Security with Lead Wire and 3M Adhesive Paper

One of my window security alarm sensors got damaged, so I browsed on-line and decided to go with this brand. The product arrived two days after I placed my order. It was easy to install. It took me about ten minutes. It could have taken me less time if the sensors were little bit narrower. The product came in ten pieces, and I only needed one, so I have nine pieces left. It's been a week since I replaced my damaged sensor with new one, and it seems to work properly. I would recommend this product.

There is a bit of a delay in the sensor compared to my alarm company sensors. However, much more reasonable than the charges my alarm company charged to add sensors to my current system.

Used for a DIY smart garage door opener with ESP32 module. Once installed correctly, it’s been perfectly reliable and I doubt that will change because of how simple it is. Great item for the price and now I have a whole bunch of extras for future projects.

Works as expected. They are a little bigger than my original ones. I wish they had screws at the bottom to screw in old wires. I had to cut the wires; reconnect them back; and use electrical tape to cover them up just thin enough so I could slide the wires back inside the wall

Needed to apply new window sensors after we had new vinyl windows installed throughout our house. Drilling into new vinyl frames to install hidden sensors voids the warranty. The surface sensors are small and almost undistinguishable from white vinyl window frames.

I wanted a discreetly subtle switch for in-cabinet lighting and thought that these switches would be similar to the others I've bought in the past. I missed the part where these were 4 to 6 times the size of normal sensors. Home automation and security systems should be as invisible as possible.

Replaced our windows and doors. Easy to replace old contacts with these. Excellent quality!!

Quick delivery, little beefier than my old sensors. Liked the leads that can give you a little more working room on a retrofit. Comes with both screws and good quality 3m foam tape to adhere. Replaced some old beat up sensors, now all zones working.