ExTech EX520 Multimeter Modifications
This video shows how to modify an ExTech Multimeter backlight so that there is an external backlight switch that won't time out, as well as adding an external power supply input so that when using the meter as a bench meter you don't have to keep using up batteries.
Music from:www.freemusicarchive.org
Artist: Tortue Super Sonic
Song: Mister S.