Klein Tools ET120 Combustible Gas Leak Detector is a professional gas leak detection device designed for HVAC service, plumbing inspection, natural gas line checking, maintenance, and field troubleshooting applications. It can detect the presence of methane, propane, butane, and other combustible gases at concentrations as low as 50 ppm, helping locate leaks within an approximate detection range of 50 to 10,000 ppm. The high-sensitivity mode is suitable for 50 to 1000 ppm detection, while the low-sensitivity mode is used for 1000 to 10,000 ppm detection. The 18-inch / approximately 45 cm flexible gooseneck probe allows convenient access around gas pipes, connection points, appliances, and hard-to-reach areas. As gas concentration increases, the five red LED visual indicators and 85 dB audible alarm intensify, giving the user clear feedback when approaching the leak source. With automatic zero calibration at startup, auto power-off, digital display, comfortable overmolded body, carrying pouch, and 4 AAA batteries included, the Klein Tools ET120 is a reliable, portable, and easy-to-use combustible gas leak detector for HVAC technicians, plumbers, maintenance teams, and field personnel.

Product Features

• Detection range: approximately 50 to 10,000 ppm, based on methane.
• Two sensitivity levels: High, approximately 50 to 1000 ppm, and Low, approximately 1000 to 10,000 ppm.
• Five red LED visual indicators and an 85 dB audible alert that increases with gas concentration.
• Automatic zero calibration at startup; lights flash during self-calibration and do not indicate the presence of gas.
• 18-inch flexible gooseneck sensor extends reach and clips onto the meter for storage.
• Overmolded body provides a comfortable grip.
• Auto power-off after 10 minutes of inactivity helps preserve battery life.
• Includes detector, 4 AAA batteries, instruction manual, and storage pouch.