Handheld Digital Oxygen Detector USB Rechargeable Automotive O2 Sensor Tester Monitor LCD Display Adjustable Alarm Auto Power Off Oxygen Meter for Car Tunnel Laboratory and Industry

to oxygen gas, sound and light alarm level can be set manually. Great tool for home, agriculture, chemmical industry, general industries.Features:PROFESSIONAL OXYGEN DETECTOR -- Portable oxygen(O2) gas detector, measure range 0-25% oxygen content. Adopt electri-chemical type gas sensor to measure, this oxygen detector sensor with stable performance and  high accuracy.ADJUSTABLE ALARM -- Sound and light dual-alarm when O2 gas concentration reaches the level of the alarm.  And the alarm value can be customized according to users demands.BACKLIT LCD DISPLAY -- The gas meter is compact and lightweight, features a large LCD display with backlight, you can get the result from the screen at a glance, even in dark,easy to carry on and convenient for reading.USB RECHARGEABLE -- Come with a 3.7V rechargeable lithium battery, charging through micro USB interface, which can be powered by power adapter, power bank, etc..WIDELY APPLICABLE -- The Oxygen detectorCs can be used in metallurgy, power plant, chemical, mine, tunnel, underground pipelines and other places, effective prevention of hypoxia and oxygen poisoning.Speicification:Color: Black + BlueMaterial: ABSDetecting Gas: OxygenVoltage: AC100-240V, 50/60HzOutput: DC5V, 1000±50mAMeasuring Range: 0~25%Resolution: 0.1%Basic Error: ≤ ±5% full scaleTemperature: -10~50℃Resolution: 0.1℃Working Humidity: 1%RH~99%RHResponse Time: ≤15SRecovery Time: ≤15SAlarm Mode: Acoustic and LightAuto Power Off: Mannual Selectable (10 mins no any key press down)Power Supply: 1 * 3.7V, 1000mAh rechargeable li-ion batteryScreen Size: 4.4 * 5.3cm / 1.73 * 2.08inItem Size: 180*65*30mm / 7.09*2.56*1.18inItem Weight: 182g/6.42inPacking List:1 * Smart Oxygen Detector1 * USB Cable1 * User Manual1 * Carry Bag