Working Voltage: AC100 – 240V ~ 50 Hz / 60 Hz, 10mA
Backup Battery: 3.7V ==, 720mAh
Networking: Zigbee
Alarm Sound Level: 95dB/m (1 metre away)
Wireless Networking Distance: ≤ 80 metres (open indoors)
Working Temperature: -10°C ~ +50°C
Working Humidity: ≤ 95%RH (No Condensation)
Detector Dimension: 80 (Diameter) x 32 mm (Height) | (Plug Not Included)