„„The iAQ-2000 uses demand-controlled ventilation to signal fans to turn on when VOCs are present and shut off when indoor air quality returns to normal. Building occupants often rate air quality on VOCs like smoke, food odors, bio-effluence, and outdoor pollutants. Unlike traditional sensors, the iAQ-2000 can detect these compounds to maximum occupant satisfaction. The iAQ-2000 features low-power consumption and auto-calibrating sensing technology for maintenance-free operation. The iAQ-engine model is also available to address small buildings.