Welcome to our store! 1. Working Principle: When there's a temperature difference at both ends of the thermoelectric power generation module, the modified module can generate continuous DC current. The greater the temperature difference at both ends of the module, the larger the generated DC current, the greater the power, and the higher the thermoelectric conversion efficiency. 2. Improve Thermal Conductivity: During use, apply high-temperature resistant and thermally conductive flexible graphite heat transfer paper to both ends of the module to enhance the module's thermal conductivity, thereby improving equipment efficiency and durability. 3. Applicable Scenarios: Thermoelectric generators can be used for power generation, cooling, or heating. These modules are specifically built for power generation but can also be utilized for cooling or heating applications. 4. Special Design: Thermoelectric generators are designed by thermoelectric companies specifically for power generation. 5. Reliable Performance: SP1848 27145 TEG Peltier modules significantly outperform standard Peltiers in power generation applications. Item Type: Thermoelectric Generator Material: Semiconductor Weight: Approx. 24g/0.8oz Model: SP1848 27145 Wire Length: Approx. 300mm/11.8 inches (±3mm) Operating Temperature: -40℃～120℃ Generator Size: Approx. 40x40x4mm/1.6x1.6x0.2 inches The side with text is close to the cooling surface (cold end). No text on the heat-absorbing surface (hot end). The red wire connects to the positive terminal, and the black wire connects to the negative terminal. It can generate electricity when there is a temperature difference. Packing List: 1 x Thermoelectric Generator Package Weight: Approx. 150 grams. Please allow for minor errors due to manual measurement and different monitor displays. (Customer satisfaction is our top priority. If you encounter any product issues after receiving the goods, such as damage or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory customer service. Thank you for meeting me. I hope this helps. I wish you a happy life.)