VC VC9801A/2A VC9804A Digital Multimeter User Manual

About this manual

The VC9801A/2A and VC9804A series are battery‑powered digital multimeters with a 28 mm LCD display. They measure DC/AC voltage, DC/AC current, resistance, capacitance, frequency, diode, transistor, continuity, temperature, and include features such as backlight and automatic shutdown.

The manual provides an overview, safety guidelines, detailed button functions, step‑by‑step measurement procedures, technical specifications, battery and fuse replacement, maintenance tips, and troubleshooting instructions. This manual is written in Chinese.

What's inside

• Overview
• Unboxing Check
• Safety Guidelines
• Electrical Symbols
• Specifications
• External Structure
• Button Functions
• Measurement Instructions
• Battery Replacement
• Maintenance and Troubleshooting

Frequently asked questions

How do I replace the battery?

Open the battery compartment, remove the old 9 V battery, insert a new 9 V battery, and close the compartment.

What does the "OL" display mean?

It indicates that the measured value exceeds the selected range (over‑range).

How can I cancel the automatic power‑off (APO) function?

Short‑press the POWER APO key to turn the automatic shutdown off.