Sauna Heater Control with WiFi, Digital On/Off, Time,Temp, Mirror UKU Wi-Fi Mirror sauna controller makes sauna heating convenient and comfortable. With UKU you can heat your sauna on the spot or do it from your phone through HUUM mobile app. UKU comes with several safety and extra features for a pleasant sauna experience. HUUM UKU Mirror is designed for use with sauna heaters up to 11kW (For HUUM sauna heaters over 11kw and up to 18kW, an UKU Ext Box is required.). Stylish Mirror control display panel Display panel can be recessed or surface-mounted For heaters up to 11kW (over 11kW up to 18kW requires an UKU extension box) Settable on/off, time, temperature, and delay Settable temperature range of 122-230F Delayed start-up to 48hrs in advance Built-in Wi-Fi interface for HUUM mobile app 8 Language options: English, German, Russian, Italian, Finnish, Polish and French Notification when set temperature is reached Inside/outside sauna room installation Displays set temperature and room temperature Door sensor to keep the heat inside the room Remotely located main control module Connects to lights and ventilation or steamer (not included) Mirror control display panel, 3.5" x 5.11" x 0.72" (0.54" can be recessed into the wall) Control display panel cable, 9.84', 22AWG Main control module dimensions: 5.59" x 3.54" x 2.28" Temperature sensor cable, 16.4', 24AWG Door sensor cable, 16.4', 24AWG Installation and operation manual