These heaters are similar to the KTSH-NL range, except they have a more refined and easily accessible external digital contoller.

You can choose between 8 & 9kW models, with either single, or three-phase option. 

The KTSH-80WL has a volume range 7-12 cubic metres, the 90WL is 8-14cubic metres

DIGITAL CONTROLLERS CON-D1, 1-phase, or D2, 3-phase

These controllers allow the user to select cabin temperature, set the timer within a 24 hour period and contol the sauna light. There is also provision to control an extractor fan.