Detecting Gas :LNG & LPG Sensing Method : Catalytic & Diffusion Type Alarm : Green (Power) , Yellow (1000-2000PPM) Red(>3000PPM) Buzzer 80dB AT 50Cm Battery : Alkaline AA 1.5V 2EA , Sustainment time:Max.10Hrs Power Consumption : 1.2W (DC3V, Max 180mA) Operation Temperature : -20 C ~+50 C Operation Humidity : 0% ~ 95%RH Material : ABS 190(L) X 32( ) Weight : 100g (with Battery) Certification :CE, FCC, ISO9001, ISO1400