Multifunctional Tester for Transistors for automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, thyristors, resistors, capacitors or other devices. Easy and convenient to operate.
This Sound Level Meter is a stable, safe and reliable digital sound meter. The entire circuit is designed with the single chip processor as core, using the advanced circuit for sampling and signal processing.
