Honeywell RP971A1007 4-Port Ratio Relay 3 PSI IN/3-13 PSI Out

The Honeywell RP971A1007 4-Port Ratio Relay is a precision instrument in the HVAC systems that is used in controlling the output pressure about the input pressure. It has four ports, an input pressure of 3 PSI and output pressure of 3-13 PSI. This relay is designed to operate at low airflow 0.002 SCFM and wide temperature range -18°C to 60°C making it ideal for several applications. It is used in VAV boxes, fan coil units, and chillers to increase the system efficiency, and comfort level of occupants, and decrease energy use.