Sci-tech Electronics Circuit Lab Model ETR 020 is a comprehensive and self-contained system suitable for anyone engaged in electronic circuit experiments. All necessary instruments for electronic circuit experiments such as power supply, function generator, analog and digital meters, are installed on the main unit. The 19 modules cover a wide range of essential topics in the field of electronic circuits. It is a time and cost saving Lab Equipment, model ETR 020, useful for researchers and students for applications in training, developing and prototype circuit testing.