Basic parameters:

Size: 108 mm * 61 mm * 40 mm
Weight: 1351g
Sensor types: electrochemistry method

 (gas catalytic combustion type, special Separately)
Detection of gases: oxygen (O₂), gas (EX), poisonous and harmful Gases

(CO, H₂S, NH₃, CL₂, etc.)
Response time:≤30s(O₂); ≤40s(CO); ≤20s(EX);≤30s (H₂S)

Time Display: the machine is year, month, day, and the clock display function
Display: dot matrix liquid crystal display in Chinese,

High brightness white backlight

(10 cm away from instrument)
Light alarm Red LED
Work mode: continuous work

(charged under the condition of gas can work 20 hours or so, other gas 7 days or so, the above is for reference only the standBy time depending on the number of alarm)
Temperature range: - 20 ℃ ~ 50 ℃
Humidity: 15% ~ 95% RH (No condensation)
Power supply: the lithium battery power supply (1500 mAh)
Charging time: 3 ~ 5 hours
Charging voltage: DC5V