THESE CONTROLLERS ARE USED AS A SLAVE (EXPAND THE OUTPUTS OF THE HTC 4 SERIES CONTROLLERS )
HRC-43S 3 Heat/3 Cool Staging Relay
HRC-4A 3 Heat/2 Cool Staging Relay
HRC-4B 2 Heat/3 Cool Staging Relay
HRC-4D 2 Heat/3 Cool Staging Relay with Economy Cycle Comparitor
HRC-4D-DIG 2 Heat/3 Cool Staging Relay with Economy Cycle Comparitor
HRC-4DE-DIG 2 Heat/3 Cool Staging Relay with Modulating Economy Cycle Camparitor
HRC-4E 2 Heat/2 Cool Staging Relay with Modulatng Economy Cycle Output
HRC-4DE 2 Heat/3 Cool Staging Relay with Modulating Economy Cycle Output Camparitor
HRC-4DIG 2 Heat/2 Cool Staging Relay
ENQUIRE HERE FOR AVAILABILTY AND PRICING
