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.
This manual introduces the Victor 81A/81B digital multimeter, describing its key features, measurement functions, and accessories included in the package. It also outlines safety precautions and proper handling to ensure accurate measurements and user safety.
Detailed sections cover the instrument panel, button functions, additional features such as auto/manual range switching, battery replacement, and troubleshooting steps for common issues. This manual is written in Chinese.
| Display | 3 1/2‑digit LCD |
|---|---|
| Measurement functions | DC voltage, AC voltage, DC current, AC current, resistance, temperature (°F), diode, continuity |
| Power source | 2 × AAA 1.5 V batteries |
| Size | 145 mm × ? mm × 36 mm |
| Weight | ≈185 g (including batteries) |
When the LCD shows a low‑battery symbol, open the battery cover, remove the two AAA batteries, insert new ones, and close the cover tightly.
Press the RANGE key; the instrument toggles from auto‑range (displaying “AUT”) to manual range where you can select 200 mV, 2 V, 20 V, 200 V, or 600 V.