Combustible Gas Detector Detects Combustible Gases Measuring Range Varies by Selected Sensor(s) Accuracy Varies by Selected Sensor(s) Audible LED Indicator Features Adjustable Sensitivity Thumbwheel Housing and Protective Boot LED Leak Level Indicator Rechargeable Battery and Charger Safe for Use In Hazardous Locations UL-913 Approved Battery 4.8V Nickel-Metal Hydride Rechargeable Height 1 13/16 in Width 3 in Depth 8 in Includes Case Manufacturers Warranty Length 1 yr