Upgrade Combustible Gas Leak Detector- JLY50A is equipped LCD Display and high-quality imported sensors, the range is upgraded to 0-10000ppm, with higher measurement accuracy and stability. Its can detect more than 10 types of gas leak including for LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc.Protecting your work productivity and family life. Easy to use- Ready to use right out of the box, auto-detect after warming up.With high and low alarm settings, you can switch freely by pressing the button. The sensor has a long life span of more than 2 yearsIt is also can be resist to radiation and electromagnetic interference, which protects your safety. Visual & Audio Gas Alarm- JLY-50A Natural gas detector equiped with 2x AAA Alkaline Batteries and LCD audible&visual alarms,wraparound gas sniff probe when gas leakage is detected, it can send out an alarm alert within 5s while the LCD lights up red. It also has an automatic power-saving function, which will shut down automatically if you do not operate it for 5mins. Portable Design- JLY-50A pen-clip design is convenient to place in your chest and back pockets, and the double-side non-slip texture design is also easy for you to use indoors, outdoor tents, and RV trips. Add a safety guarantee for your pleasant traveling. Usage Environment- Natural gas leak detector is widely used in home, outdoor sports, RV travel, petroleum, chemical, environmental protection, metallurgy, oil refining, gas transmission and distribution, biochemical medicine, agriculture and other industries.