30-hour battery life for extended field use Ten bright red LEDs and audible tick indicate relative gas concentration Turn thumbwheel to power on and adjust tick rate for easy one-handed operation Extra-long 20" (50.8 cm) flexible probe for hard-to-reach places UL 913 classified as intrinsically safe in Class I, Division 1, Groups A, B, C, and D hazardous locations Applications include: acetone, acetylene, ammonia, benzene, butane, ethanol, gasoline, hexane, hydrogen, industrial solvents, methane,...