HIGHKA’s key ventilation distinction is the combination of occupancy sensing technology and continuous operation. The microwave radar breathing sensor (0.1-second response, −30°C to 60°C) detects occupancy through respiration rather than motion — meaning ventilation continues throughout stationary focus sessions, not only when the occupant is moving. Many PIR (passive infrared) sensor systems detect motion rather than presence, which means ventilation may cycle off during a quiet focus session precisely when air quality management matters most. HIGHKA’s continuous turbine ventilation, active throughout occupancy regardless of motion, prevents CO₂ accumulation across any session length — directly supporting the air quality that Harvard research links to a 26% improvement in cognitive function.