This paper presents an experimental study on the Seebeck effect and the Peltier effect of the thermoelectric modules (TEM). The Seebeck module is fabricated using three different metals: aluminum, copper, and iron, and the Peltier module consist of two elements: BiSn and Al. The experimental results show that the electromotive power proportionally increases with increasing the temperature difference of the contact portion of the metal wire. In particular, the electromotive power was approximately 0.18 mV for the module of copper and aluminum combination at the temperature difference of 70℃. The Peltier effect of the modules becomes remarkable at the higher voltage and current; however, too high voltage and current cause the short lifespan of the module. The supplied voltage is concluded to be limited to less than 8 V.