An occupancy sensor is an infrared or ultrasonic device that detects if a person is in a room and adjusts the ACIq system accordingly. Many of our modern Ductless Mini Splits and Ceiling Cassettes feature built-in "eye" sensors that can redirect airflow away from people or turn down the unit when the room is empty. This is a powerful way to save energy in rooms like guest bedrooms or home offices that aren't used 24/7. You can also find universal occupancy sensors in our Parts collection that can be wired into a standard thermostat. These sensors can even be set to turn off lights or other electronics to further reduce your energy footprint. Using occupancy-based cooling is a key strategy for achieving "Smart Home" efficiency goals. It ensures that your comfort is always prioritized without wasting a single watt of electricity on an empty room. It represents the high-tech intersection of automation and HVAC comfort.