Specification:- External threads: 1/2"- Temperature : -25~+80 C- Allowing pressure: 1.75Mpa- Operating humidity range: 35%~90%RH (no frost)- Load capacity: 10 mA (DC 5V)- Working voltage range: DC 5~18 V- Maximum operating current: 15 mA (DC 5V)- The lowest rated working voltage: DC 4.5 5V-24V