With hydrosensor, set value range 6-28 °C, automatic frost protection at approx. 6 °C. Limitation and locking of set value range possible by means of stop pins 1 9551 02 (to be ordered separately).

With hydrosensor, set value range 6-30 °C, with “0” position, automatic frost protection at 6 °C adjustable. Limitation and locking of set value range by means of stop pins 1 9551 02 (to be ordered separately).