General Tools DMM20 7 Functions/20 Ranges Manual Ranging Digital Multimeter Features 7 Functions, 20 Ranges Measures AC/DC voltage, DC current and resistance Also checks for continuity and diode integrity Safety-recessed test lead sockets High-impact thermoplastic case; power source is 1 9V battery (included) Features 7 Functions, 20 Ranges Also checks for continuity and diode integrity Safety-recessed test lead sockets High-impact thermoplastic case; power source is 1 9V battery (included)