The ColdStik™ Refrigerator/Freezer Thermometer doesn't just measure the air - it is a food product simulator. It simulates food product temperature in changing ambient conditions of any refrigerator, freezer, walk-in or delivery truck. The 336 conserves energy, saving cost and food loss when the refrigeration temperature is adjusted for the actual product temperature. Supports your food safety program. Stand or hang with (2) zip ties enclosed.