Heating / cooling control;Easy operation and intuitive display; Delay-time On / Off function;The temperature difference between off and on is adjustable;Allowable to calibrate the temperature display; Allowable to connect the external temperature sensor (Optional: NTC 100K). Outdoor temperature display provided.Display adjustable between room temperature, outdoor temperature and preset temperature.

Applicable to control of no fan (WH501WW), single-speed fan(WH502WW)and three-speed fan(WH504WW).

Fan speed adjustable automatically or manually (WH502WW,WH504WW). Energy saving function by using room card (WH501 WW,WH502WW,WH504WW).Antifreeze when turn off.Allowable to set the highest temperature of heating and the lowest temperature of cooling.Three transmission modes for selection, Allowed for wired / wireless installation in standard box(WH501 WW,WH502WW,WH504WW).