Description
The VC921 is a compact, auto-ranging digital multimeter designed for portability without sacrificing essential functionality. Its ultra-slim profile is comparable to a smartphone, allowing it to be easily stored in a pocket or toolkit. Despite its small size, the meter is a fully-featured instrument capable of performing a wide range of electrical tests, including measuring voltage, resistance, capacitance, and frequency. The device is user-friendly, featuring an intuitive rotary switch, a clear LCD display, and a convenient data hold function. A protective case that doubles as a stand helps safeguard the device during transport and on the workbench.
Key Features
- Auto-Ranging Functionality: Automatically selects the correct measurement range for the parameter being tested, simplifying operation and reducing the chance of user error.
- 4000-Count Display: Provides a maximum display reading of 3999, offering a good balance of resolution and clarity for most common measurement tasks.
- Compact, Pocket-Sized Design: Lightweight and slim, making it exceptionally portable and easy to carry.
- Dual Measurement Capabilities: Equipped to measure AC/DC voltage, resistance, capacitance, frequency, duty cycle, and perform diode and continuity tests.
- Data Hold & Auto Power Off: Features a data hold function to freeze readings on the screen and an auto power-off function to conserve battery life after a period of inactivity.
- Integrated Safety Features: Includes overload protection and high-voltage protection on the resistance and capacitance ranges, providing a safeguard against accidental misuse.
Specifications
- Display Count: 3999 (3 3/4 digit)
- Sampling Rate: Approximately 3 times per second
- Input Impedance: 10MΩ
- Power Supply: 2 × 1.5V AAA batteries (not always included)
- Auto Power Off: After approx. 15 minutes of inactivity
- Dimension (H×W×D): Approx. 117–125 × 80 × 19–20 mm
- Weight: Approx. 108–133g (with batteries and protective case)
| Measurement | Ranges | Basic Accuracy |
|---|---|---|
| DC Voltage | 400mV, 4V, 40V, 400V, 600V | ±(0.5% + 4) |
| AC Voltage | 400mV, 4V, 40V, 400V, 600V | ±(0.8% + 6) |
| Resistance | 400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ | ±(0.8% + 4) |
| Capacitance | 40nF, 400nF, 4μF, 400μF (up to 4000μF on some) | ±(3.5% + 8) |
| Frequency | 100Hz, 1kHz, 10kHz, 100kHz, 1MHz, 10MHz | ±(0.5% + 4) |
Applications
- General Electrical Troubleshooting: Suitable for diagnosing issues in household wiring, appliances, and power supplies.
- Electronics Hobby & Education: An ideal tool for students and makers working on DIY electronics, Arduino projects, and circuit prototyping.
- Field Service & Maintenance: Its compact size makes it perfect for on-the-go technicians and field service applications.
Datasheet:
For detailed technical information, refer to the VC921 Digital Multimeter Datasheet