The device has a built-in powerful siren that will allow you to hear it even if you are in another room, sleeping or listening to loud music. Also, the device has a colorful LED that will blink in case of an alarm. Compatible with most popular smart home ecosystems. HomeKit, Yandex, IFTTT, and more are supported. Just connect it to the Aqara Hub and bind the account. The fire alarm with zigbee app can be applied to detect smoke from any room, including kitchen, bathroom, bedroom, living room, office, etc. The detector will not only trigger all of your siren-equipped Aqara Hubs automatically via the Alert System, but also will be able to send configurable push notifications (including Critical Alerts) to your phone or any other device where the Aqara Home app is installed.