Peltier Thermoelectric DeviceWhen a voltage is applied, a temperature difference is created from one side to another; one side gets cool while the other gets hot. Changing the voltage polarity reverses the hot and cold sides. Furthermore, the reverse is alsotrue; when there is a temperature differential, one side to another, a voltage is created.A small Peltier device like this would be useful for controlling temperatures in a small, localized area; CPUs, circuit boards, small electronic devices, etc. *Must be used in conjunction with a heat sink!*12 VDC60W11/2″ x 1 1/2″ x 1/8″ (38mm x 38mm x 2.8mm)13″ Leads