Type of grounding: Metal casing of thermostat connect with grounding metal parts Mounting type: big, small/high ... per the customer’s requirementType of grounding: Metal casing of thermostat connect with grounding metal partsMounting type: big, small/high, ... hot-water, Vacuum cleaner, Duplicator, Electric stove, Oven, Dryers, Refrigerator, Dish washer conditioning, Etc. Bimetal disc for thermostat