The 5R7-001 temperature controller creates a seamless transition between heating and cooling devices, as it serves as the commander of thermoelectric modules. With a bi-directional or unidirectional H-bridge configuration, the temperature controller has many benefits. The included, user-friendly PC software makes it easy for users to change any temperature control configurations. The software also enables the temperature controller to operate as a stand-alone unit. A computer can also be connected to the device, for retrieving data. Oven Industries. www.ovenind.com