With the MHK1 Wireless Remote Controller Kit, comfort control has never been easier. It installs anywhere with a simple wall-mounted design, and its large, back-lit screen makes it very easy to read. Operation modes include cool, drying, auto, heat, and fan. Optimal start eliminates the guesswork when setting a schedule. This function allows the remote controller to "learn" how long your Zoned Comfort Solution takes to reach the programmed temperature setting, so the temperature is reached at teh time you set. The basic MHK1 Wireless Remote Controller Kit invludes a Wireless Wall-Mounted Remote Controller and a Wireless Receiver located with the indoor wall or ceiling-mounted unit. You may choose to enhance your control convenience and flexibility with an optional Portable Central Controller and Outisde Air Sensor.