Dwyer 475-00T-FM-AV is an intrinsically safe handheld digital manometer with a temperature range of 0 to 140°F (-17.8 to 60°C). It has an accuracy of ±0.5% FS and operates on a 9 V alkaline battery. The 0.42" (10.6 mm) 4-digit LCD display provides clear readings. The manometer is designed for use with air and compatible combustible gases and has various connection options available. Its hysteresis is ±0.1% of FS.