I bought one for my own electronics work. Later, because there was a discount, I bought a few extra from China, so now I am selling the extra ones (at a discounted price). FNIRSI LCR-P1 Multifunction LCR Transistor Capacitor Tester - A very useful device for testing various electronic components including resistors, capacitors, inductors, transistors, and diodes. It will be very useful for electronics students, hobbyists, repair work, or DIY projects. Very handy for basic signal testing, circuit checking, and electronics experiments.