The DRN4 is a resistive output motor actuator interface that accepts several types of DDC system signals. The DRN4 output is 0 to 135 ohms. The input signal types are field selectable by an 8-position DIP switch.  The floating point input accepts two digital signals, one for increase and the other for decrease.  The floating point full scale rate of change is 55 seconds.  Some triac input signals require an accessory.  The DRN4 is supplied in an enclosure that can be directly mounted to a 1/2 inch knockout on the motor acuator.  Color coded wire leads with spade connectors are provided for electrical connections.  The DRN4 is covered by ACI's Two (2) Year Limited Warranty.