The Emerson 11B02-1 Surface Mount Hydronic Temperature Control is a manual control device designed for HVAC and refrigeration systems. It includes an immersion control component and has a compact size of 7.6 x 4.7 x 3.3 inches. The product is lightweight at 1.7 pounds and does not require batteries for operation. With a sleek surface mount design and no backlight feature, this temperature control unit is a reliable and efficient component for regulating heating and cooling systems in various industrial and commercial settings.