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.

Perfect match for my system

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.

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

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

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.

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.

Product can be screwed into place or stuck with strong double sided glue strips. All included. The screw ears are scored so they can be broken off if not needed. Time will tell on magnetic endurance.

Had to replace a recessed sensor when we changed out our door for a sliding glass door. These worked perfectly. Bigger than the current window sensors we have but not by much. Still discreet. Like that it comes with the lead wire.

Wanted to add extra alarm points. The sensors work well and have good range. Used the screws and mounting tape they came with

Worked perfect with our alarm system.

I purchased the product to replace my window and door contacts for the alarm system. It's exactly what I needed..works well and the price was excellent. If I could suggest to the supplier...wires should've been colour coded just in case the purchaser is not electrically inclined

Their thickness was making installation hard to pack them in between the windows, I had to return and got slimmer one.