Iyunithi yokupholisa yeBlackShields TC TEC Peltier yekhabhathi yenzelwe ukupholisa ngaphakathi/ngaphandle kwikhabhathi kwindawo ecela umngeni ngaphakathi nangaphandle. Isebenzisa iteknoloji ye-thermoelectric kwaye yenzelwe ukubonelela nge-48V DC. Inokususa ubushushu obugqithisileyo kwisixhobo sombane esinje ngeebhetri ezikwindawo ezivalekileyo kwaye lolona khetho lulungileyo lokupholisa igumbi lebhetri.