Battery specification: CR2450×2
Standby current: ≤10μA
Alarm current: ≤80mA
Working temperature: -10°C～+50°C
Relative humidity: ＜95% (no condensation)
WiFi standard: IEEE802.11b/g/n 2.4G frequency band
Low battery alarm & long standby
Product size: 70×31.5×15.5mm (large), 70×11×13.5mm (small)