Feature: 1. GOOD SAFETY: The gas detector is a device that detects the presence of gas in the area. It is used to detect gas leakage and interface with the control system, so it can automatically shut down the process. 2. SOUND AND LIGHT ALARM: With sound and light alarm, adjustable alarm value, the alarm sound is as high as 80 decibels, and the operator in the area where the leakage occurs can be alerted to leave. 3. MULTIFUNCTIONAL: It can detect combustible, flammable and toxic gases and oxygen consumption, etc., used as a separate unit to monitor small work space areas, or units can be combined or linked together to create a protection system. 4. WIDE APPLICATIONS: It is widely used in industry and can be used in locations such as oil rigs to monitor the manufacturing process, fire protection, metallurgy, agriculture, chemical industry, oil refining and other industries. 5. HIGH ACCURACY: Adopts electrochemical measurement principle, high accuracy, ultra high sensitivity and faster response time, and supports automatic or manual shutdown. Specification: Item Type: Oxygen Detector Material: ABS Model: AS8801 Battery: Rechargeable Lithium Battery 3.7V 1800mAh (Built In Battery) Uses: Widely used in industry, and can be found in locations such as oil rigs to monitor manufacturing processes, emerging technologies, such as photovoltaics. They can also be used for fire fighting. Support Language: English Basic Parameters: Gas Type: Oxygen Measuring Range: 0-30%VOL Resolution: 0.1% T90: 10 Seconds Measuring Principle: Electrochemical principle, life is 2 years Sound and Light Alarm: Adjustable alarm value, alarm sound up to 80 decibels. Low Power Alarm: √ Low/High Alarm/Alarm Setting: √ Automatic/Manual Shutdown: √ Backlight: High Brightness Backlight Working Temperature: -10-50℃ (except 0-40℃ for LEL) Operating Humidity: 15-95%RH, Typical Value Storage Temperature: 0-40℃ Product Size: Approx. 66.35x95.8x52mm / 2.6x3.8x2.0in Power Supply: Rechargeable Lithium Ion Battery, 3.7 Volts (Include) Battery Operating Time: 5-8 hours, 12 hours using AS8930 sampling pump. Package List: 1 x Oxygen Detector1 x USB Cable1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.Effects of Hypoxia and Oxygen Enrichment: Oxygen Concentration (%): Symptoms (atmospheric pressure)100%: Fatal, 6 minutes (absolutely closed environment, such as hyperbaric oxygen chamber)50%: It is fatal and can be cured after 45 minutes of treatment. (Absolutely closed environment, such as hyperbaric oxygen chamber)>23.5%: Oxygen enriched20.96%: Normal19.5%: Lowest15‑19%: Reduce efficiency, causing problems with the head, lungs and circulatory system10‑12%: Shortness of breath, loss of judgment, purple lips8‑10%: Treatment failure, syncope, coma, pale face, nausea and vomiting6‑8%: 8 minutes, low blood pressure, rapid heartbeat, mouth breathing, stop breathing quickly4‑6%: 40 seconds, convulsions, breathing stops, death