Cheffort Oxygen Gas Meter Digital Portable Automotive O2 Gas r Digital LCD Display Alarm O2 Concentration Measurement r Device for Car Climbing Tunnel Laboratory and Industry

PROFESSIONAL TOOL: The O2 meter is a device that detects the presence of oxygen(O2) gases in an area, often as part of a safety system. The professional detector adopts the electrochemical sensor, which gives a quick and accurate measurement. It can continuously monitor 0-25% O2 gas concentration accurately in the surrounding environment., POWERFUL FUNCTION: Sound and light dual-alarm when O2 gas concentration reaches the level of the alarm. With a large LCD screen display the measured results, you can get gas concentration and temperature at a glance., RECHARGEABLE BATTERY：3.7V rechargeable lithium battery, with micro USB interface, can be charged through the USB interface of the phone power adapter, computer, etc. Also you can use while charging., HANDHELD SIZE: The gas meter is compact and lightweight, professional designed to fit comfortable in your palm，easy to carry and operate., WIDELY APPLICABLE: The Oxygen detectors can be used in car, metallurgy, power plant, chemical, mine, tunnel, underground pipelines and other places, effective prevention of hypoxia and oxygen poisoning.