Tark Thermal Solutions Multistage MS Hi-Delta T Thermoelectric Coolers are able to reach significantly colder temperatures than single-stage thermoelectric coolers. The MS Thermoelectric Coolers are environmentally friendly and feature high-temperature differential, precise temperature control, and reliable solid-state operation. This particular product line is available in various temperature differentials, heat pumping capacities, and geometric shapes. Tark MS Thermoelectric Coolers are designed for higher current and lower heat-pumping applications and are ideal for applications operating in a room temperature environment.