Combustible Gas Leak DetectorFeatures:Detection range: -50 to 10,000 ppm* (*based on Methane)Two levels of detection: High (-50 to 1000 ppm) and Low (-50 to 10,000 ppm)Five red LED's (visual) and 85db audible alerts that increase with gas concentrationAutomatic zero-point calibration at power-up18 inch flexible gooseneck expands sensor's reach; clips onto device for storageOver-molded body for comfortable gripAuto power-off after 10 minutes of non-usage conserves battery lifeIncludes detector, 4xAAA batteries, instruction manual and storage pouchSpecifications:Special Features: Audible Alert, Auto-Power Off, Visual NotificationOverall Length: 28-5/16" (719.1mm)Overall Height: 2-3/4" (69.9mm)Overall Width: 1-25/32" (45.2mm)Batteries: 4 x AAADisplay: Digital Included:Batteries, Carrying PouchWeight w/Batteries: 15oz (425g)Weight:13oz (380g)WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.