Title： AQARA Smart Smoke Detector Zigbee Fire Alarm Monitor Sound Alert Home Security APP Remote Control Features： 1. AQARA smoke alarm,Remote alarm, the home danger is known in time. 2. Progressive sound alarm 3. Self-check reminders in regularly 4. Early detection of fire 5. Easy to setup Specification： Brand: Aqara Model ： JY-GZ-01 AQ Size: 104.6x42cm Connection :Zigbee Battery : CR17450 Voltage : 3VDC Battery Life : 10 years Battery capacity : 2400MAH (include) Alarm volume : 80DB Working temperature : -10℃ -55℃ Working humidity: 0-95% RH Package list： 1*Smart Smoke Detector 1*Manual Note: 1) If you need to use the device to connect to the mobile APP, or link other smart devices to realize automation scenarios. Need to be used with zigbee gateway( like aqara hub with zigbee 3.0 ,xiaomi gateway with zigbee 3.0 etc...) NOT SUPPORT AQARA G2H camera . 2 ) Smoke alarm comes with battery ( becuse the aliexpress shipping does not accept battery out of the devices, so we usually will open the box and put the battery into the Smoke Detector ) 3) Quickly connect to the any AQARA HUB zigbee 3.0：you can press the Smoke Detector button 3 times .then it will connect to the hub automatically .