Parameter DR-600 Fixed gas detector Detection Gas Methane (CH4) Range 0-100%LEL Min Reading 1%LEL Display Error �±5%(F.S) Transmission Distance 1,200m Alarm Point Low Alarm:20%LEL High Alarm:50%LEL Rated Power 2.5W Output Signal 4-20ma/RS485 Detection Way Diffused Response Time â?¤60s Cable Specification Three wire system RVVP3*1.0mm2 Working Temp -10â??~55â?? Working Humidity 10~93%RH Storage Temp 10â??~35â?? Sensor Type Catalytic Combustion Power Supply DC24V Production Grade Exd IIC T6 Gb Protection Grade IP66 Electrical interface M20*1.5mm2 Alarm Way Sound alarm Sensor Life Clean air for 2 years Way to Install Fixed bracket/tube mounting/wall mounting Weight 1.75kg Size 210*190*95mm