This system, which is compatible with more personal work environments and highly convertible layouts, including layouts for infection prevention, provides temperature control in finely divided zones with cells (outlet units). Through the linked operation and individualization of smart damper for diffuser (SDF), air conditioning can be turned on and off by zone, and the temperature can be set with a smartphone. The air conditioning can be adjusted responsively even as persons are nearby are feeling different levels of hot and cold. These air conditioning controls were developed based on know-how gained from experiments performed with volunteers from the company.