Rechargeable Handheld Digital Oxygen Detector Black 24.5 x 5.8 x 9cm

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.