Devi 140F1085 is the Devireg 850 Master snow-melting and ice-melting controller for gutter, downpipe, roof and outdoor paved-area heating installations. The two-channel analogue controller runs on 220-240 V 50/60 Hz, uses a remote temperature/moisture sensor and switches a change-over contact rated 16 A at 250 V. Housing is six modular widths wide, IP30, for DIN-rail mounting inside a distribution board. It regulates the heating cable only when both cold and moisture conditions warrant, minimising energy use.