1、Adopting electrochemical sensor, which gives a quick and accurate measurement. 2、This multifunctional Rechargeable oxygen detector also can measure temperature. 3、With a large LCD screen display the measured results, you can get oxygen concentration and temperature at a glance. 4、The oxygen monitor has audio and visual alarm, you can set audio alarm decibel that can give you a obvious prompt. 5、Portable and handheld, easy to operate and carry. Widely used in chemical industry, electronic industry, underground operations, in-car oxygen detection. Description: Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion, etc. This oxygen detector is widely used in industry and can be found in locations, such as on oil rigs, to monitor manufacture processes and emerging technologies such as photovoltaic. They may also be used in firefighting. Features: Adopting electrochemical sensor, which gives a quick and accurate measurement. This multifunctional Rechargeable oxygen detector also can measure temperature. With a large LCD screen display the measured results, you can get oxygen concentration and temperature at a glance. The oxygen monitor has audio and visual alarm, you can set audio alarm decibel that can give you a obvious prompt. Portable and handheld, easy to operate and carry. Widely used in chemical industry, electronic industry, underground operations, in-car oxygen detection. Specification: Brand SMART SENSOR Type AR8100 Gas Type Oxygen Measuring range 0-25% Resolution 5ppm Basic error Less than 1.5% full scale Temperature range -10℃-50℃ Response time <15s Recovery time <15s The principle of sensor Electrochemical type, life for 2 years Display LCD Alarm mode Acoustic and light Battery 3.7V rechargeable lithium battery Operating time >90h (continue working) Operation humidity <95%RH Operation temperature -10℃-50℃ Weight 743g/26.2oz Package List: 1 * Oxygen Detector 1 * USB Data Cable 1 * Battery 1 * Case 1 * User Manual 1 * CE Certification Note: Please kindly make a note if you need any adapter. Please allow slight error due to manual measurement. Thanks for your understanding. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.