Ohut nauha-anturi

Installed this on my office window and I barely even notice it's there, which is exactly what I wanted. The slim profile slides right into that narrow gap without any awkward overhang, and it’s been totally reliable so far. Setup took me about five minutes and now I actually remember to arm the syst

The gap between my sliding door and frame is barely half a centimeter, but this sensor slipped right in without any prying or shims. I love that it’s completely invisible when the door is closed. Set-up was a breeze and it’s been rock-solid for two weeks now.

Installed this on my front door in about two minutes, and it’s so slim I almost forgot it was there. The fit between the frame and door is perfect, and it’s already caught every open and close without a hiccup.