laboratory equipment with analog and digital controls for use in the biotech ... high quality unique analog and digital chilling and heating equipment new ... -based it has solid-state material in a module that functions as a small heat pump by ... a low voltage dc power source to the module heat will be moved through the module ... from one side to the other one module face will be cooled while the other ... reversing the current flow through the module thus the module can be used to heat or ...