Cross Twin Stirling Engine with Power Generation Device and Voltmeter

This set features a Cross Twin Stirling engine, a power generation device, an indicator light, and a voltmeter to measure the output power. The Stirling engine converts heat energy into mechanical and then electrical energy — no battery required, no external power source needed. The power generation device is designed to increase voltage and current output, while the indicator light and voltmeter allow for precise measurements of output power.