Working voltage: AC90-230V plug-in (European/American)
Battery voltage: 9V rechargeable battery (optional)
Working temperature: 0 ℃ - 50 ℃
Warm-up time: about 180s
Environmental humility: 10% - 95%
Sound level: 85dB/m
Alarm density: 2500PPM (± 1500PPM)
Alarm time: keep the alarm after exceeding 2500PPM
Alarm: voice and LCD display
Size: 112 × seventy-three × 42MM