DC 12V or 24V ,red+and black S45 connected to the output terminals of gas alarm.2.2 Bracket number of the valve specifications: 3. Technical parameter3.1 Operation environmentTemperature: -10~+50Humidity: 95%3.2 Rated voltage: DC 12V Operating voltage: DC 6V~18V3.3 Rated current: 100mA Operating current: 20mA~1000mA3.4 Rated power: 1.2W Operating power: 0.24W~10W3.5 Valve pressure: 1.6Mpa3.6 Valve specifications: 1/2inch,3/4inch, 1 inch, 1.25 inch, 1.5 inch3.7 Close time: 5~10 seconds Open time: 5~10 seconds3.8 Torque:30~60kg.cm3.9 Insulation resistance: 20M3.10 Withstand voltage: DC600V3.11 Anti-electromagnetic-interference, no-spark design.3.12 With auto-manual shift clutch.3.13 Net weight: Type A 360g Type B 596g Type C 588g Gross weight: Type A 395g Type B 638g Type C 630g 3.14 Dimensions: Type A 100mm 90mm 70mmType B 130mm 95mm 70mmType C 130mm110mm70mm