Features: This device is capable of precisely detecting a ranges of combustible gases, including LPG, methane, ethane, propanes, butanes, natural gas, coal gas, and gas fuels, effectively pinpointing any gas leaks. The Gas detectors that response time< 30s, when the air quality is not safe, it would warn the user through sound, visual and vibration alarms, you can also choose to turn off the sound when the alarm goes off. The shell of gas detectors is crafted from high-strengthes engineering plastic and composites antislip rubber, with high strengthes and good feel, and the gas monitor is also waterproof, dust-proof and explosions-proof. The gas detectors is widely used in industry such as petroleum, refining, gas transportation and distribution, medicine, agriculture. It is a essential tool for your gas equipment usage, offering reliable support for maintenance. Specifications: Material: ABS, Electronic Component Measurement ranges:% LEL: 0-20%; PPM:0~9999PPM Display mode: bar indication Sensitivity: 50PPM (methane) Alarm mode: display+sound alarm Automatic shutdown: 15 minutes (can be manually turned off) Product size:Approx.16.5x6cm/6.5x2.36inches Weight: Approximately 98g (excluding battery) Power supply: 2 × 1.5VAAA (R03/LR03) Package Includes: 1Pc Gas Leak detectors note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.