Combustible Gas Detector Detects Natural Gas Propane Measuring Range 1000 to 6500 ppm Natural Gas 500 to 6500 ppm Propane Audible and Visual Indicator Features Audible and Visual Alerts Built-in Static Electricity Discharge Check CE RoHS Battery (2) AAA 1.5V Batteries Height 7 1/10 in Width 4/5 in Includes (2) AAA Batteries Pocket Clip Protective Cap Manufacturers Warranty Length 1 yr