Honeywell S963B1128/U Manual Potentiometer 135 Ohm 90 Series

The Honeywell S963B1128/U 90 Series manual potentiometer with a 135 ohm resistance value. This is a variable resistor, in the sense that its resistance can be manually changed by turning a shaft. In HVAC systems it is used to control a number of functions such as fan speed, airflow modulation, or temperature control of a zone. In the potentiometer, the electrical resistance of the component is varied to change the current flow to the controlled part. It enables precise and fine tuned changes of system parameters. The potentiometer is a durable, reliable, easy to use part that is popular for HVAC applications.