1. Introduction
The BSIDE Smart Digital Multimeter (A3/A3X) is a pen-shaped multitester designed for various electrical measurements. It features a red/green bicolor display, automatic mode selection, and a compact, portable design. This manual provides essential information for safe and effective use of your device.
Figure 1: BSIDE Smart Digital Multimeter (A3X) with included accessories.
Video 1: Overview of the BSIDE Smart Digital Multimeter's features and usage.
2. Safety Information
Always observe safety precautions when using electrical testing equipment. This device complies with international safety standards and holds CE certification.
- Do not attempt to measure voltages or currents exceeding the specified maximum ratings.
- Ensure test leads are in good condition and properly connected before making measurements.
- Use caution when working with live circuits. The device features a dangerous voltage alarm and live wire detection for enhanced safety.
- Do not operate the device if it appears damaged or is not functioning properly.
3. Product Components and Controls
Figure 2: Overview of the multimeter's controls and LCD display symbols.
3.1. Controls
- Power Button: Press to turn the device on or off.
- AUTO Button: Activates automatic measurement mode, allowing the device to intelligently detect and measure voltage, resistance, and continuity.
- SEL Button: Used to manually select specific measurement functions when not in auto mode.
- Flashlight: Integrated LED flashlight for illuminating work areas.
3.2. Display Symbols
The LCD screen displays various symbols to indicate the current measurement mode and status:
| Symbol | Explanation |
|---|---|
| DC | DC voltage |
| AC | AC voltage |
| Auto shutdown function indication | |
| Low battery indication | |
| ))) | Continuity |
| % | Data hold |
| HOLD | Data hold |
| V, mV | Voltage unit: volt, millivolt |
| nF, µF, mF | Capacitance unit |
| MΩ, kΩ, Ω | Resistance unit |
| OHM | Resistance mode |
| KHz, Hz | Frequency unit |
4. Setup
4.1. Battery Installation
The multimeter requires two 1.5V AAA batteries (not included). To install or replace batteries:
- Locate the battery compartment cover on the back of the device.
- Use a screwdriver to open the cover.
- Insert two AAA batteries, ensuring correct polarity (+ and -). Refer to the diagram for proper orientation.
- Close the battery compartment cover and secure it with the screw.
Figure 3: Correct battery installation for 2 x 1.5V AAA batteries.
4.2. Connecting Test Leads
For contact measurements, connect the included test leads to the input terminals at the bottom of the multimeter. Ensure a secure connection.
Figure 4: Multimeter with test leads, screwdriver, and carrying case.
5. Operating Instructions
5.1. Power On/Off
Press the red power button to turn the multimeter on. Press and hold the power button to turn it off. The device also features an automatic shut-down function to conserve battery life.
5.2. Auto Mode Selection
The multimeter defaults to Auto Mode upon power-on. In this mode, it automatically identifies and measures AC/DC voltage, resistance, and continuity with the best resolution. Press the "AUTO" button to toggle this feature.
Figure 5: Auto Mode automatically selects the appropriate measurement function.
5.3. Function Selection (SEL Button)
When not in Auto Mode, press the "SEL" button to cycle through different measurement functions such as voltage, resistance, capacitance, frequency, diode, and continuity.
5.4. Measurement Functions
- AC/DC Voltage Measurement: Connect the test leads to the circuit. The display will show the voltage. The A3X model supports up to 600V AC/DC.
- Resistance Measurement: Ensure the circuit is de-energized. Connect the test leads across the component. The display shows resistance in Ohms (Ω).
- Capacitance Measurement: Ensure the capacitor is discharged before testing. Connect the test leads across the capacitor. The display shows capacitance in Farads (F).
- Frequency Test: The A3X model can measure frequencies up to 4MHz.
- Diode Test: Connect the test leads across the diode. The display shows the forward voltage drop.
- Continuity Test: Connect the test leads across the circuit or component. If the resistance is less than 50Ω, a beeper will sound, indicating continuity.
- Battery Test: The multimeter can test battery voltage and polarity.
Figure 6: Measuring AC voltage from a wall outlet.
Figure 7: Measuring capacitance of a component.
Figure 8: Testing an automotive battery.
5.5. Special Features
- V-Alert (Non-Contact Voltage Detection - NCV): Hold the tip of the multimeter near a live wire or outlet. The device will beep and the LCD will display a stripe pattern, indicating the presence of AC voltage. The A3X model provides Low/High sensitivity detection.
- Live Wire Detection: Distinguish between live and neutral wires by comparing the strength of the detected voltage signal. The wire with the stronger signal is the live wire. The display will show red for live and green for neutral.
- Breakpoint Locate: Quickly locate breakpoints in a wire by detecting changes in voltage strength.
- True RMS Function: Accurately measures non-sine wave power, which is crucial for modern electrical appliances that often distort mains electricity.
- Bright LED Flashlight: Use the integrated flashlight for testing in dimly lit environments.
- Red/Green Bicolor Display: The display changes color (red/green) to provide clear visual feedback, especially for voltage strength detection (Null, Low, High).
Figure 9: Using V-Alert for non-contact voltage detection near a circuit breaker.
Figure 10: Differentiating between live (red) and neutral (green) wires.
Figure 11: Locating a breakpoint in a wire.
Figure 12: Comparison of ordinary and True RMS measurement methods.
Figure 13: Using the built-in LED flashlight.
Figure 14: The 3-results display for detected voltage strength.
6. Maintenance
6.1. Battery Replacement
When the low battery indicator appears on the display, replace the batteries promptly to ensure accurate readings and proper device function. Refer to Section 4.1 for battery installation instructions.
Figure 15: Easy battery replacement for lasting endurance.
6.2. Cleaning and Storage
- Clean the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Store the multimeter in a dry environment, away from direct sunlight and extreme temperatures. The recommended operating temperature is 0°C to 50°C.
- Use the included EVA portable cloth bag for protection during storage and transport.
7. Troubleshooting
- No Display/Faint Display: Check battery levels and replace if necessary. Ensure batteries are installed with correct polarity.
- Incorrect Readings: Verify that the correct measurement mode is selected (or Auto mode is functioning). Ensure test leads are properly connected and making good contact. Check for any visible damage to the device or leads.
- Overload Protection: The device is equipped with overload protection. If an overload occurs, disconnect the device from the circuit immediately and check the circuit for faults.
- Dangerous Voltage Alarm: If the alarm sounds unexpectedly, exercise extreme caution and verify the circuit status before proceeding.
8. Specifications
The following table details the specifications for the BSIDE A3 and A3X models:
Figure 16: Detailed specifications for A3 and A3X models.
| Measuring Range | A3 | A3X | Accuracy |
|---|---|---|---|
| Max display | 2000 Counts | 4000 Counts | |
| Display | Red/Green LCD Display | ||
| True-RMS | √ | √ | |
| DC Voltage | 520V | 600V | ±(0.8%+3counts) |
| AC Voltage | 520V | 600V | ±(1.2%+5counts) |
| Frequency | X | 4MHz | ±(2.0%+10counts) |
| Resistance Test | 20MΩ | 40MΩ | ±(2.0%+10counts) |
| V~Alert (NCV) | √ (Low/High Sensitivity) | ||
| Live wire distinguish | √ (Contact/Non-contact Distinguish) | ||
| Continuity | √ (If the resistance is less than 50Ω, the beeper sounds) | ||
| Capacitance Test | 2000µF | 4000µF | ±(4.5%+10counts) |
| Diode Test | √ | ||
| Ambient temperature | — | 0°C-50°C | ±(2% + 2counts) |
| Features | Automatic shut-down; Data Hold; Backlight | ||
| Flashlight lighting | √ | ||
| Battery | 2 x 1.5V AAA Battery (Not include) | ||
| Product Size | 16.9*3*3.1cm | ||
| Weight | About:77g (Not include) | ||
9. User Tips
- Versatile Testing: This multimeter is excellent for a wide range of tasks including mechanical repair, electrical work, home use, and car repair.
- Quick Checks: Utilize the Auto mode for quick and efficient measurements of common electrical parameters without manual range selection.
- Safety First: Always rely on the dangerous voltage alarm and live wire detection features to ensure safety when working with potentially live circuits.
- Battery Life: The automatic shut-down feature helps prolong battery life, but always keep spare AAA batteries on hand for uninterrupted work.
- Clarity of Display: The red/green bicolor display provides clear visual cues, making it easy to interpret detected voltage strength (Null, Low, High).
10. Warranty and Support
Your BSIDE Smart Digital Multimeter comes with a 12-month warranty from the date of purchase, covering manufacturing defects. For technical support, warranty claims, or any questions regarding your device, please contact BSIDE Official Store customer service.
Figure 17: BSIDE Quality Service highlights, including 12-Months Warranty.
