This kit includes all the parts needed to install an automatic machine heater and cooler that turns on/off depending upon machine temperature. This is great for vending locations that are subject to extreme cold teperatures. Often times refridgeration systems will work too well, causing the product in a machine to expand and explode inside their cans. This creates a safety hazzard until the machine is properly cleaned and inspected which takes time and money. This kit is also capable of replacing the machine's internal thermostat for a fully automatic heating and cooling solution. A video on the proper instllation of this product will be added to this description in the coming weeks.