{HEAD ~ A control unit} supplies electricity to the thermoelectric device such that the first surface absorbs heat in a cooling mode and the second surface absorbs {TAIL ~ heat} in a heating mode 
{ HEAD ~ A control unit } supplies electricity to the thermoelectric device such that the first surface absorbs heat in a cooling mode and the second surface absorbs { TAIL ~ heat } in a heating mode
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH