Red Lion Controls ZCH0500CProduct Attribute Attribute Value Current Rating 40 mA Mounting Type Face Mount Output Type Quadrature Pulse Per Revolution 500 PPR Series ZCH Series Supply Voltage 8 28 V Type Incremental Overview The units are rugged, incremental encoders that convert shaft rotation into a current sinking pulse train. Internally, a single LED light source and a photologic sensor in conjunction with a shaft mounted, durable, metal etched encoder disc, provides signal