The Transducer 4-SIP Module is included in the package for convenience. It is recommended to set the temperature of the transducers to -40°C~85°C to ensure reliable operation. The transducers are capable of operating well at 10V~12V supply voltage. In order for the transducers to function properly, the 4 pins must be connected. This transducer can handle pressures up to 15 Psi.