The sauna lamp must have the protection class of at least IPx4 and should be resistant to the ambient sauna temperatures. The sauna lamp may be installed at any location but never close to the rising hot air of the heater. Only dimmable lamps may be used. The control unit will detect strongly inductive loads and will adjust the phase edge control accordingly. Notice: By connection of not dimmable lamps there is a risk of damaging either the illuminant or the control unit. No warranty claims may be accepted in this case.