ShellyBlu Door/Window White | Bluetooth Operated Sensor | Home Automation | iOS Android App | Alexa & Google Home Compatibility | Lux and Tilt Angle Measurement | Set Custom Activation Scenes

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 automate scenes and alarms within the Shelly app. For the price, these units cannot be beat for home integration. I especially love how easy these are to integrate into my IOT setup with MQTT, which is a major bonus.

I ordered two door/windows sensors and they both arrived with dead batteries. After replacing the batteries and trying to configure them for over an hour I finally gave up. No help from their costumer service at all. I do not recommend these sensors.

Using this little bluetooth contact sensor in the mechanical room of my basement, on the lid of my washing machine. It's part of an automation on Home Assistant that ends a "nag" if I haven't removed my wet laundry after a cycle. If the lid is open for greater than 20 seconds, the nag turns off. The lid closes, the nag is reset for the next load.This was very easy to install and it's quite small. In my case, it melds in quite well with my washing machine. Because I have bluetooth proxies everywhere, I have zero connection issues.It was definitely a good value for the money, and enables me to use a non-Zigbee device in a location that sometimes gets Zigbee-cranky.

These work fantastically well as a trigger for doors and windows for automations in Home Assistant. They have tremendous range; one Shelley Gateway located in a central location of my house can detect/monitor these small sensors all over the 5,000 square foot dwelling. They also have an ambient photosensor to tell Home Assistant the light level of the room, as well as a built-in tilt sensor to detect how tilted the unit is. They are also very light weight and tiny, easy to hide, and come in three colors to help it blend in even more.I will dock a star, however, for how difficult they can be to open up, how in roughly half of these that I have bought their batteries arrived dead, and how when you first get them, they "kinda" work until you update their firmware, and the firmware update is quite flaky and requires frequent "wake up" sessions and force quits of the application to get them to work.I'd like to see Shelley expand this as an option to create a whole-home security system alternative to zWave/ZigBee devices by adding a true security hub, or at least a siren/audible alarm to indicate an intruder. Until that day, I can probably do alternative methods, but these sensors are absolutely great once you get a new battery into them.

This has a great small form factor, it integrated seamlessly with the 2PM's I had and showed up in Home Assistant without issue. It responds quickly, and is much smaller and less obtrusive than the z-wave devices I have. But -- it came with a dead battery. Completely - showed 0.25v on a meter. Fortunately the batteries are fairly cheap and I had some, but really? Does this mean it was previously used? Even if old stock it's supposed to be a FIVE YEAR battery and these are fairly new. So now waiting to see if it runs dead quickly, or this was dead from the factory.

At first I had issues with the device becoming unavailable after a few minutes of inactivity but discovered my Home Assistant was not up to date. I hate updating HA when I have a stable version but updating to 2024.1.6 fixed my Blu Door Window issue and miraculously didn't break anything else.The Shelly app is not needed unless you need to update firmware, which I found unnecessary in my case.

one of the two sensors I ordered was defective. The other one quickly paired with home assistant and seems to work

I ordered 3 Shelly door/window sensors. One arrived with a dead battery. Another was as expected as in off and with a full battery. The last on was on with a full battery. The best part is my Home Assistant picked it up from my mailbox. That's how I discovered I received my order ahead of schedule. The only reason I'm giving just 4 stars is because one unit arrived with a dead battery "CR2032". Aside from that I'm happy with these devices. Easy setup both in the Shelly app and in Home Assistant. 2 thumbs up!