The Velleman ESR70 is an electronic part consisting of an LCD display, a 0÷40O resistance module, a 20mA,25mA current module, a 2.5÷3V voltage module, and a 1÷22000uF capacitance module. It is used for testing and measuring electronic components including resistors, capacitors, inductors, and transistors. It also features built-in circuit protection, a backlight LCD display, selectable auto/manual ranging, and low battery indication. The ESR70 is a versatile, easy-to-use tool for troubleshooting a wide variety of electronic components.