Shandong China Coal Industry

chinacoal07 Combustible Gas Leak Detector AR8800A+ Combustible Gas Detector 8800A+ gas meter gas detector combustible detector gas meters measuring instruments scales electronic sel ectricity tester multi function meter gauge electronic instrument tool High sensitive Ergonomic mold for nice handheld touching, single hand operation Audible and visual alarm Sensor performs self detection during startup 3.7V 650mAH Li cell employed, recharging anywhere MODEL 8800A+ Detection natural gas, LPG, artificial goal gas and etc.. Sensor planar semiconductor Bootup time in 60 seconds Alarm 20Hz ~ 5KHz Range of alarm ~1% LEL LED1 flashing, without buzzer ~2% LEL LED2 flashing, with buzzer ~5% LEL LED3 flashing, with buzzer ~10% LEL LED4 flashing, with buzzer ~20% LEL LED5 flashing, with buzzer Alarm mode LED, buzzer Working temperature -20C ~ 70C Working humidity less than 90% RH Power source Li cell 3.7V 1100mA/h Indication of charge 10% red LED1 20% red LED2 30% red LED3 40% red LED4 50% red LED5 Indication of sensitivity Level 0, red LED3 Level -1, red LED2 Level -2, red LED0 Level +1, red LED4 Level +2, red LED5