Victor 81A/81B is a stable and reliable 3 1/2 digit digital multimeter. The meter adopts a 18.9mm high LCD display with clear readability. It can be used to measure DC voltage, AC voltage, DC current, AC current, resistance, temperature/Fahrenheit, diodes and continuity testing. It also has unit symbol display, automatic/manual range switching, automatic power-off and alarm functions. The whole machine adopts an 8-bit microprocessor that can directly drive the LCD and a double-integration A/D converter integrated circuit, which provides high resolution and high-precision digital display driving. The meter is fully functional, has high measurement accuracy and is easy to use. It is an ideal tool for laboratories, factories, radio enthusiasts and families.