Working voltage: 3 AAA batteries
Sensitivity / Alarm time: 30ppm, after 2 hours; 50 ppm, 60 ~ 90 minutes; 100 ppm, 10 ~ 40 minutes; 300 ppm, within 3 minutes
Quiescent current: <50uA (200uA when LCD display light is on)
Alarm current: <75mA
Working environment: 5-40 ° C
Ambient humidity: 20 ~ 90% R.H
Alarm output: 85db / 1m, 3Khz frequency, red LED flashes quickly
Static output: green LED indicator flashes every 30 seconds
Low battery warning: “di” sound and “lb” displayed every 30 seconds
Size: 115mm * 37mm
Weight: 130 grams