Function and specification: 1. Measure range 3 ~ 299 PSI (may choose 2). Measure accuracy: +/-1% 3. Resolution ratio: 0.5 PSI 4. Temperature range: -30 spends Celsius till 70 5. Operating voltage: 3 V/5V/12V 6. The upper electricity starts up , may set up if automation shut-down gives exegesis or explanation when being left the factory by manufacturer: Measure to having being able to not shut machine down time pressure, off time (may elect) time has arrived at automation shut-downFunction and specification: 1. Measure range 3 ~ 299 PSI (may choose 2). Measure accuracy: +/-1% 3. Resolution ratio: 0.5 PSI 4. Temperature range: -30 spends Celsius till 70 5. Operating voltage: 3 V/5V/12V 6. The upper electricity starts up , may set up if automation shut-down gives exegesis or explanation when being left