1.Thermoelectric modules are the semiconductor element . 2.fast cooling, no noise,no pollution. 3.Vmax 3.8V Imax 3A Features:size: 20 x 20 x 3.8mmSmall and lightweightFree choice of configurationSince there are no moving parts, there is no vibration or noisyWith only a power cord, it is easy to handle.Performance Parameters Resistance 0.37Ω ± 10% Imax 8.5A Vmax 3.8 V Tmax 68 °C Qcmax 18.0w(Th=27C ...