Brief Introduction: MR-JL269 gas detector for industrial use has a high performance and wide detecting range. It can be used to detect methane, natural gases, propane, LPG, Hydrogen and other combustible gases and find the gas leaking point easily. Features: - Calibration-free on gas sensor - Quick response to combustible gas leakage - Long and flexible gooseneck tube - Adjustable sensitivity - 30-level LED / tricolor show - Battery low voltage alert - Sensor fault self test Specifications Sensor type£ºSemi-conductor gas sensor Detecting gas£ºFlammable gases Gas sampling£ºNatural diffusion Response time£º¡Ü5S Sensitivity£ºBetter than 50ppm Working temperature.-10¡æ-55¡æ Working humidity£º¡Ü93£¥RH Storage temperature£º-30¡æ-60¡æ Storage humidity£º¡Ü93£¥RH Power supply£º3.6V Ni-MH 1600mAh rechargeable battery Charging time£º4 to 6 hours Continuous working time£ºNot less than 8 hours £¨normal working status£© Sensor life£º2 years Dimension and weight£º180mm¡Á72mm¡Á35.5mm about 300g carton box and gift box, according to requirement