Aqara Smart Smoke Detector NB-IoT Version

The speaker can generate an 80dB alarm, whilst there’s also a built-in light that flashes red in the event of smoke being detected
Aqara Smart Smoke Detector (NB-IoT) is different from other Zigbee sub-devices
The Aqara Smart Smoke Detector is CCC certified
The theoretical design life is 7 years