• Detection range: Approximately 50 to 10,000 ppm* (*based on Methane) Two levels of sensitivity: High (Approximately 50 to 1000 ppm) and Low (Approximately 50 to 10,000 ppm) • Five red LED's (visual) and 85dB 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" flexible gooseneck expands sensor's reach; clips onto meter for storage • Over-molded body for comfortable grip • Auto power-off after 10 minutes of non-usage conserves battery life • Includes detector, (4) AAA batteries, instruction manual and storage pouch