Features 1、A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. 2、A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life. 3、Gas detectors can be used to detect combustible, flammable and toxic gases, and epletion, etc. This type of device 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. 4、While many of the standard gas detector units were originally fabricated to detect one gas, modern multifunctional or multi-gas devices are capable of detecting several gases at once. Some detectors may be utilized as individual units to monitor small workspace areas, or units can be combined or linked together to create a protection system. 5、Widely used in ships, mines, petroleum exploitation, chemical industry, gas pipeline, tunnel construction, coal, metallurgy, paper making, fire fighting, municipal administration, textile and other industries. Specification Features: A gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life. Gas detectors can be used to detect combustible, flammable and toxic gases, and epletion, etc. This type of device 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. While many of the standard gas detector units were originally fabricated to detect one gas, modern multifunctional or multi-gas devices are capable of detecting several gases at once. Some detectors may be utilized as individual units to monitor small workspace areas, or units can be combined or linked together to create a protection system. Widely used in ships, mines, petroleum exploitation, chemical industry, gas pipeline, tunnel construction, coal, metallurgy, paper making, fire fighting, municipal administration, textile and other industries. Specifications: Model: AS8900 Material: ABS Carbon Monoxide (CO): 0~999ppm, 1ppm Hydrogen Sulfide (H₂S): 0~500ppm, 1ppm Oxygen (O₂): 0~30% VOL, 0.1% Combustible Gas (LEL): 0~100%LEL, 1% Operation Current: 220mA Short Circuit Current: ≤3A Operation Voltage: 3.7V Maximum Open Circuit Voltage: ≤4.2V Battery Type: Lithium battery Display Type: Segment type LCD Operation Humidity: 15%~95%RH Operation Temperature: -10℃~50℃ Storage Temperature: 0~40℃ Battery Working Runtime: 8 hours, 6 hours (with sample pump, but no alarm) Item Size: 110 * 64.4 * 44.5mm / 4.33 * 2.53 * 1.75in Item Weight: 205g / 7.23oz Package Weight: 703g / 24.79oz Package Size: 25.5 * 21 * 7cm / 10.04 * 8.26 * 2.75in Package List: 1 * 4 in 1 Mutil Gas Monitor 1 * USB Cable 1 * Carry Case 1 * Standard Gas Cover 1 * User Manual (English) Package List Package List: 1 * 4 in 1 Mutil Gas Monitor 1 * USB Cable 1 * Carry Case 1 * Standard Gas Cover 1 * User Manual (English)