Cold Control Thermostat for all Vendo Soda Vending Machines including 511, Vmax, V21, 721, 840, 621, 720, 821, 540, soda machines. This thermostat is automatic & has no adjustment to it. That way u don’t have to worry about setting the temperature it will hold the machine between 34-44 degrees automatically. The specs are 125/250 volts & AMPS FL 16/8 LR 80/40. If your soda machine is freezing drinks then the thermostat will need to be replaced. This thermostat is brand new from factory. This is a generic part will fit all vendo machines that have a cold control.