Gas leak detector,used to measure O3 gas

Model Number: HFP-1201#0011 Brand Name: HuaFan QinLu Key Specifications/Special Features: Basic parameters:Size: 108 mm * 61 mm * 40 mmWeight: 135 gSensor types: electrochemistry method (gas catalytic combustion type, special separately)Destination gas: oxygen (O2), gas (EX), poisonous and harmful gases (CO, H2S, NH3, CL2, etc.)Response time: ≤30s(O2); ≤40s(CO); ≤20s(EX);Time display: the machine is year, month, day, and the clock display functionDisplay: dot matrix liquid crystal display in Chinese, high brightness white backlightAlarm: voice alarm more than 90db (10 cm away from instrument)light alarm Red LEDWork 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 (1500mAh)
Charging time: 3 ~ 5 hours
Charging voltage: DC 16V