Shelly BLU Door/Window Brown

Was honestly expecting a simpler open/close alert, but the tilt angle and light readings are a nice bonus I didn't think I'd use. Paired it with my phone in a couple of minutes and it's been rock solid on the patio door for two weeks now. The brown casing blends right into the frame too.

Set this up on my back door in about ten minutes, and the Bluetooth range easily covers my whole apartment. The luminosity reading is a clever extra—it told me exactly when my porch light burned out.

The tilt angle reporting is a nice bonus I didn't expect—it catches when the window is left slightly ajar, not just fully open. Pairing took about a minute and it's been rock-solid on the patio door for two weeks now, with the light sensor even triggering the hallway lamp automatically.