The Curtis PB-8 has a 3-wire design to accommodate controllers with a 3-wire input, but also can be used on all 2-wire configurations and has the same footprint and mounting pattern as the PB-6. It was designed for cable actuation. The PB-8 is outfitted with a micro switch which may be optionally used for various control inputs. The output is 0-5k ohm.
White = Low
Black = Wiper
Red = High
Included Components