Comprehensive Gas Detection: This device is professionally designed to detect leaks of various gases, including methane, propane, butane, and ethanol. It is an essential tool for ensuring the safety of residential, RV, and industrial environments. Flexible Probe, Easy Operation: Equipped with a 12-inch (approximately 30 cm) long flexible gooseneck tube, this gas leak detector can easily navigate through confined spaces and hard-to-reach areas, making it an essential tool for HVAC technicians, inspectors, and DIY enthusiasts. Instant Alarm System: An 85-decibel audible and visual alarm displays the detected gas and its concentration, ensuring your safety. This instant response system allows you to be aware of potential hazards promptly. Precise Sensitivity Adjustment: The detector's sensitivity can be adjusted with a simple knob, allowing you to accurately locate even the smallest leaks or distinguish background gas concentrations from potential threats, ensuring accurate and reliable readings. Power Supply:3 x AAA battery (Not included batteries) Color:Yellow Material:ABS+Metal Package Contents: 1 * gas leak detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.