If you go to work with your electricity at home, the Digi-Tool 420A may come in handy. This digital multimeter is in measurement category CAT II 250 V and is therefore suitable for tinkering on your table saw, scaffold iron or similar devices. In addition to measuring voltage, current and resistance, you also measure frequencies between 40 and 400 Hz and temperatures up to 40 degrees Celsius. If you want to know the state of charge of your batteries, you also do this with this multimeter. Finally, you also detect cable breaks. The data hold function and the acoustic warning signal make measuring with the 420A much easier.