Based on this product's specifications, here are some alternatives and similar models
Snow and ice detection system DANFOSS devireg 850 with 4 sensors and display, 1-pole
Summary description:
DANFOSS devireg 850 is a snow and ice detection system supplied with four sensors and a display, designed for 1-pole switching. It detects snow and ice accumulation to control heating or de-icing equipment, helping prevent slippery surfaces and ice damage. Suitable for outdoor use on walkways, ramps, stairs, and roof edges where automated activation of heating systems is required.