Humidifier and dehumidifier controls use sensors to measure the humidity of a room and regulate the humidity-controlling parts of the HVAC system. They are commonly used to reduce mold, mildew, or condensation.

Humidifier controls measure and regulate humidity levels in HVAC systems. They are commonly wall-mounted in the occupied space so that users can make adjustments to ensure occupant comfort. They can be mounted inside the HVAC cold air return duct to measure the humidity in the airstream.

Dehumidifier controls use sensors to measure the humidity of a room and regulate the dehumidifying components of the HVAC system. They are commonly used in humid climates to reduce mold and mildew and help reduce cooling costs by removing moisture from the air.

Humidity stage modules connect to other humidity control and various HVAC components and regulate the humidity in a space. Each module can be configured to operate different systems at different humidity levels. They can fine-tune the humidity level by using several units set to different setpoints and having each one perform a different set of tasks.