Shelly Blu Door/Window White - Smart Bluetooth Montion Sensor Alarm, Home Security, Remote Control Detector, App Alerts, Alexa & Google Home, Gateway Required, Scene Activation, Lux Sensor

The Shelly BLU Door/Window sensors do exactly what they are supposed to – and do so very reliably. The detection of “open” and “closed” is precise, the response time is quick and the wireless connection via the BLU Gateway is stable. I mainly use the sensors in combination with radiator thermostats … Read more

It always arrives with only empty batteries, but the part is really practical and super small. It actually fits into any groove. Additionally, you can use the Shelly relays as a Bluetooth proxy, giving you perfect coverage. I use a few of them that I then send to Home Assistant at the end.

... Door/window sensor of my home automation. Reasons:- so small that it fits into the door, window frame and is not visible- via the Shelly BLE app you can a) turn off the beacon: battery lasts longer b) update the firmware- Simple and functional integration into Home Assistant- Fast response- Reli… Read more

These units from Shelly are small, discreet and come in a variety of colors. Installing them is really easy; simply peel the adhesive and stick. These also work well with doors that are'n't perfectly aligned (this can be a challenge with some magnetic switches). The sensors work quickly and you can … Read more