Extension Box HUUM UKU for heaters up to 38 kW is an additional component designed for the UKU sauna control system. It is used when the power of the sauna heater exceeds the capacity of the main control unit, ensuring safe and efficient operation.

Note: The main module and the extension box must be connected to separate circuit breakers. The extension box must be installed outside the steam room, near the UKU main module. Fix the unit to the wall using 4 screws.