Easy to use: Transmission enables convenient functional selection and precise measurements. Multifunctional design: Combines inductance, frequency, polarized and nonpolarized capacity measurement. SW3 selflocking switch: Improves measuring accuracy for different types of capacity. Soldering set: Practice the soldering of loose parts to improve practical skills and understand microcontroller principles. Use scenarios In electronics labs or classrooms, use the device to measure inductance, frequency, and both polarized and nonpolarized capacity to verify component specifications and support circuit design. In DIY projects and microcontroller learning, use the soldering set to practice soldering loose parts and to understand microcontroller principles, while using the measurements to validate hardware. In and maintenance tasks, quickly diagnose faulty inductors or capacitors by measuring components in a circuit and confirming circuit integrity.