The ET120 is it the perfect choice for HVAC professionals. It is an easy-to-use tester that provides audible and visual alarms in the presence of methane, propane and other combustible gases at concentrations as low as 50 ppm. It features 2 levels of sensitivity depending on users' needs - high (approximately 50 to 1000 ppm) and low (approximately 1000 to 10000 ppm).

KLEIN TOOLS® Combustible Gas Leak Detector, Battery Power Source, 1.78 in Width, 2-3/4 in Height, 28.31 in Depth

• Detection range - approximately 50 to 10000 ppm
• Five red LED's (visual) and 85 dB audible alerts that increase with gas concentration
• Automatic zero-point calibration at power-up (lights will flash during self-calibration, this does not indicate the presence of gas)
• 18 in flexible gooseneck expands sensor's reach, clips onto meter for storage
• Overmolded body for comfortable grip
• Auto power-off after 10 min of non-usage conserves battery life