It is a smoke detector for fire safety. It rings when it detects an opacity in the ambient air, which means that it will ring for smoke but also if you have a large cloud of steam coming out of your bathroom… Aqara smoke detector can be used to trigger scenarios in the event of a fire, including automatically switching all lights on if possible, to facilitate evacuation. It is also possible, in conjunction with a home automation system of Amazon Alexa, to go further by automatically unlocking doors with a connected lock, sending an audio message or SMS by telephone, etc.

To connect Aqara smoke detector:

The Aqara hub uk plug acts as an intermediary between the Xiaomi Aqara smart home devices and the Mi Home application on your smartphone. But it also has an LED strip whose color you can change and control the ignition, a speaker, an Internet radio function and an alarm function. In addition, it allows you to connect your equipment to the system. Finally, it is the one who watches for events reported by the sensors and triggers automation scenarios

This is the first Xiaomi equipment you will need to configure: