RAYSTAT-M2 electronic controller for snow- and ice-melting on driveways, stairs, walkways and gutters/downpipes served by heat-trace cable. The unit uses temperature and moisture inputs to energise the heating circuit only when snow or ice is actually present, reducing energy use compared with a plain thermostat. Compact DIN-format housing, 230 V AC supply, 16 A output relay, IP20, 82 x 52 x 48.8 mm.