A Thermoelectric module is a circuit containing thermoelectric materials which generates electricity from heat directly. A thermoelectric module consists of two dissimilar thermoelectric materials joined at their ends: an n-type (negatively charged), and a p-type (positively charged) semiconductor. A direct electric current will flow in the circuit when there is a temperature difference between the ends of the materials. Generally, the current magnitude is directly proportional to the temperature difference. How to Run Put some ice inside the funnel. Lit that wax candle provided with kit. Wait for some time (say 10 minutes approx.). You will find that the LED connected to Peltier Module will Lights up. This shows energy generation from Temperature difference (Seebeck effect)