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

Low profile and work well

Excellent sensors. Very long battery life using BLE technology. Used one of these sensors to replace a rechargeable Z-Wave sensor that had to be recharged every four months, necessitating reaching it via stepladders, a real pain. The new Shelly sensor has been operating for over three months now and remaining (cheap) battery life is still 95% Fast response for a sensor at this price point. Usual high Shelly quality. Works with the Shelly app or with Home Assistant using a Bluetooth proxy such as the one built in to many Shelly devices.

The button to switch it on did not work. I had to return it to the store.

The Bluetooth devices aren't the easiest to get setup but once you do they work really well. Works really well with Home Assistant and its Bluetooth relays

I have 8 of these and some of them came with flat batteries. They have no lights or UI so if I had not already known that my setup process to HomeAssistant had worked before then I would have assumed that they were DOA. I had spare CR2032 so could quickly swap the battery to figure which ones were flat but this was not a good experience. They have a proximity, tilt and luminance in a tiny inconspicuous package and would get 5* if not for the lack of a plastic pull tag to ensure the battery did not go bad in the supply chain.

Arrived with an empty battery and an instruction manual for a totally different product.

I added this to a smart home setup and it has worked really well so far. It is a compact Bluetooth door and window sensor that detects when something opens or closes and can trigger notifications or automation scenes. Installation was simple. It mounts with adhesive and the sensor and magnet align easily on a door or window frame. Once installed it disappears pretty well visually because the device is small and lightweight. One thing I like about this sensor is that it does more than just detect open and close. It also measures tilt angle and light levels, which opens up some additional automation possibilities depending on how you are using it. Battery life is rated up to around five years using a coin cell battery, which is nice because it means you are not constantly swapping batteries like some sensors. Overall this is a solid little sensor if you are building out a smart home or security setup. It is easy to install, integrates with automation platforms, and gives you reliable notifications whenever a door or window is opened.

Out of 6 door window sensors purchased, 5 failed with battery dead on arrival = 83% failure rate! 2 were black and 4 were brown. All brown failed and 1 black failed. All batteries were tested to have 0.1 volt, whereas a new battery reads 3.35 volt approximately. After testing each failing device with a good battery I was able to install the latest firmware. Shelly is clearly at fault here for not packing a thin sheet of material in the battery housing to prevent battery consumption while in storage and can be withdrawn by the purchaser. The bottom line is that a battery adds an extra cost of approximately 20% to the purchase price. I do not intend to buy any more of the brown sensors because there is obviously a poor quality control issue along with the higher price that is totally unjustified.

Funktioniert tadellos in Kombination mit einem Shelly Plus 1 Relais als Bluetooth Knoten. Ist klein und einfach an Fenster / Tür zu befestigen. Kleines Minus: Die eingelegte Batterie war total leer und mußte als erstes ersetzt werden. Blöde Idee von Shelly das Gerät mit eingesetzter Batterie auszuliefern. Das Ding liegt evtl. ein Jahr im Lager. Ist klar, daß die kleine Knopfzelle dann bei Auslieferung platt ist.

Prisvärd och gör det den ska. Snabb leverans

Finalmente ciò che cercavo per il controllo degli accessi. L’unico appunto è che sono arrivati con le batterie scariche e non riuscivo ad accoppiarli al gateway. Appena le ho sostituite si sono accoppiati immediatamente. Chiaramente è necessario il suo gateway