Q181 auxiliary potentiometers are used to control one to four Modutrol Series 90 motors from one master motor.

Q209 manual potentiometers are used to limit the minimum position of a proportioning Modutrol motor.

Q709A minimum position potentiometers mount directly on M7415 and M7405 dedicated economizer actuators to permit adjustment of minimum damper position.

S443A manual potentiometers are used for remote manual control of proportioning (Series 90) motors and relays.

S963 manual potentiometers are used for the checkout of W973 logic panels and W975 satellite sequencers.