1. Introduction
The ANENG SZ02 is an intelligent digital multimeter designed for accurate and safe electrical measurements. Featuring a burn-proof design, 9999 counts display, True RMS capability, and a backlit screen, it automatically selects the measuring function and range for ease of use. This manual provides essential information for the safe and effective operation of your multimeter.
Figure 1: ANENG SZ02 Multimeter highlighting burn-proof design, 9999 counts, and backlit screen.
2. Package Contents
Please check the package for the following items:
- 1 x ANENG SZ02 Digital Multimeter
- 1 x Instruction Manual
- 1 x Test Lead Line (Red and Black)
- 1 x Temperature Line
- 1 x Packing Box
Figure 2: Included accessories with the ANENG SZ02 Multimeter.
3. Safety Information
To ensure safe operation and avoid electrical shock or damage to the instrument, please observe the following:
- Always remove test leads before opening the case or battery cover.
- The fuse is rated at 10A/250V.
- The maximum voltage between the measuring end and the ground is 1000V DC or 750V AC.
- The device meets IEC 61010-1, 600V CAT III, Pollution Degree 2 standards.
- For safety, discharge capacitors before measuring capacitance.
- Do not directly measure current like measuring voltage; current measurements require series connection to the circuit. Direct contact can burn out the instrument.
4. Product Features
The ANENG SZ02 Multimeter offers a variety of functions and features for comprehensive electrical testing:
- Automatic Function and Range Selection: Simplifies operation by automatically identifying the measurement type.
- 9999 Counts True RMS Display: Provides high-resolution and accurate readings for both linear and non-linear loads.
- Backlit HD Screen: Ensures clear visibility of readings in various lighting conditions.
- Burn-Proof Design: Enhanced safety features to prevent damage from incorrect operation.
- Shock-Resistant Silicone Case: Durable protection against drops and impacts.
- Non-Contact Voltage (NCV) Sensing: Detects AC voltage without physical contact for increased safety.
- Zero Fire Wire Identification: Helps distinguish live and neutral wires.
- Flashlight Lighting: Integrated dual torch lighting for working in dark environments.
- Data Retention: Holds the displayed reading for convenient recording.
- Automatic Shut-down: Conserves battery life by turning off after 15 minutes of inactivity.
- Measurements: AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency (Hz), Diode, Continuity (Buzzer), Temperature.
Figure 3: Key features of the ANENG SZ02 Multimeter.
Figure 4: A variety of functions available on the multimeter.
5. Setup
5.1 Battery Installation
The multimeter requires 2 x 1.5V AAA batteries (not included). Open the battery compartment on the back of the device, insert the batteries according to the polarity markings, and close the cover securely.
5.2 Connecting Test Leads
Insert the red test lead into the 'INPUT' jack and the black test lead into the 'COM' jack. For 10A current measurements, insert the red test lead into the '10A' jack.
Figure 5: Labeled diagram of the ANENG SZ02 Multimeter showing test lead connections.
The test leads are designed with nib test pen covers for safety. You can remove these covers for finer probing when needed.
Video 1: Product demonstration showing unboxing and test lead connection (0:08 - 0:18).
6. Operating Instructions
The ANENG SZ02 automatically identifies the measurement type (AC/DC voltage, resistance, continuity) when the test leads are connected. For other functions, use the 'SEL' button to cycle through modes.
6.1 Power On/Off and Backlight
- Press the power button (U) to turn the multimeter on or off.
- Single press the backlight button (H/*) to turn on/off the screen backlight.
Figure 6: The multimeter's backlit screen for clear readings.
6.2 AC/DC Voltage Measurement
Connect the test leads to the circuit or component. The multimeter will automatically identify and display the AC or DC voltage. Ensure the leads correspond to the positive and negative poles for DC voltage.
Video 1: Product demonstration showing AC voltage measurement (0:30 - 0:36) and DC voltage measurement (0:37 - 1:02).
6.3 Resistance Measurement
Touch the test leads to both ends of the resistance. The multimeter will automatically recognize and display the resistance value.
Video 1: Product demonstration showing resistance measurement (1:03 - 1:22).
6.4 Continuity (Buzzer) Measurement
Touch the test leads to the points you want to check for continuity. If there is continuity, the multimeter will beep continuously.
Video 1: Product demonstration showing continuity measurement (1:23 - 1:34).
6.5 Diode Measurement
Connect the test leads to the diode, ensuring the positive and negative poles are aligned. The multimeter will display the forward voltage drop.
Video 1: Product demonstration showing diode measurement (1:35 - 1:49).
6.6 Capacitance Measurement
Important: For safety, discharge the capacitor before measuring. Connect the test leads to both ends of the capacitor. The multimeter will display the capacitance value.
Video 1: Product demonstration showing capacitor discharge (1:50 - 1:55) and capacitance measurement (1:56 - 2:07).
6.7 Millivolt Measurement
The multimeter allows for millivolt measurements. The value can be reset to zero before measuring millivolts for accuracy.
Video 1: Product demonstration showing millivolt zeroing and measurement (2:08 - 2:16).
6.8 Zero Fire Wire Identification (Live NCV)
Adjust the multimeter to the Live gear. Insert the red test pen socket into the rightmost socket. For a live wire, the screen will turn red, the arrow signal will be full, and the buzzer will sound. For a neutral wire, there will be no signal or beep.
Figure 7: Zero FireWire detection for identifying live and neutral lines.
Video 1: Product demonstration showing live wire detection (2:17 - 2:25).
6.9 Temperature Measurement
Plug in the temperature wire (thermocouple) into the appropriate jacks. Use the thermocouple to contact the object whose temperature you wish to measure.
Video 1: Product demonstration showing temperature measurement (2:26 - 2:36).
6.10 AC/DC Current Measurement
Important: AC and DC current measurements require series connection to the circuit. Insert the test lead into the 10A jack (for 10A measurements) or mA jack (for mA measurements) and connect in series with the circuit. Do not measure current like measuring voltage directly, as this can damage the instrument.
Figure 8: Correct series connection for AC and DC current measurements.
Video 1: Product demonstration showing AC current measurement (2:37 - 2:43) and DC current measurement (2:44 - 2:48).
6.11 Flashlight
Press the flashlight button (Y) to turn on the dual torch lighting, useful for illuminating dark work areas.
Figure 9: The multimeter's flashlight function.
Video 1: Product demonstration showing flashlight activation (2:49 - 2:54).
6.12 NCV Non-Contact Induction
Long press the NCV button to enter NCV mode. Use the top NCV sensor to approach an AC voltage source. The screen will turn red and the signal light will fill the grid, indicating the presence of AC voltage without contact.
Figure 10: NCV non-contact induction detection.
Video 1: Product demonstration showing NCV non-contact induction (2:55 - 3:02).
7. Specifications
Figure 11: Detailed specifications for Model SZ02.
| Function | Range | Resolution | Precision |
|---|---|---|---|
| AC Voltage | 600mV-999.9V | 0.1mV-0.1V | ±(0.8%+5) |
| DC Voltage | 600mV-999.9V | 0.1mV-0.1V | ±(0.5%+3) |
| AC Current | 20mA-10A | 1mA-0.01A | ±(1.0%+8) |
| DC Current | 20mA-10A | 1mA-0.01A | ±(1.5%+5) |
| Resistance | 0Ω-99.99MΩ | 0.1Ω-0.01MΩ | ±(1.8%+3) |
| Capacitance | 0nF-99.99mF | 0.001nF-0.01mF | ±(2.5%+20) |
| Frequency (Hz) | 0Hz-1000Hz | 0.1Hz-1Hz | ±(1.0%+5) |
| Temperature (°C) | -40°C-1000°C | 1°C | ±(1%+3°C) |
| Temperature (°F) | -40°F-1832°F | 1°F | ±(1%+3°F) |
| Diode | Yes | Buzzer | |
| NCV Induction | Yes | Data retention | Yes |
| Zero FireWire | Yes | Silicone case | Yes |
| Low point indication | Yes | Material | ABS/Silica gel |
| Double torch lighting | Yes | Screen display | HD backlit screen |
| Automatic shut-down | Yes | Max count | 9999 |
| Weight | 131g | Lead wire length | 94cm |
| Battery | AAA battery*2 | Pen material | PVC/Brass |
Note: The above parameters are for reference only; actual measurement specifications may vary.
Figure 12: Multimeter dimensions (67mm x 29.2mm x 127mm).
8. Troubleshooting
8.1 Millivolt Value Jump / Non-Return to Zero
If the multimeter's mV display shows a non-zero phenomenon, it can be due to:
- Excessive changes in ambient temperature and humidity.
- Strong electric or magnetic field interference.
Troubleshooting Steps:
- Dial the multimeter to the mV file.
- Insert the red and black test leads into the corresponding input holes.
- Short the red and black test leads together.
- The multimeter should display "0000" to indicate a return to zero.
While environmental factors can cause this, it does not affect the use of the multimeter. However, it is recommended to eliminate environmental interference factors to ensure measurement accuracy.
Figure 13: Millivolt value jump explanation and troubleshooting.
9. Maintenance
- Cleaning: Use a soft, dry cloth to clean the multimeter. Do not use abrasive cleaners or solvents.
- Battery Replacement: When the low battery indicator appears on the screen, replace the 2 x 1.5V AAA batteries promptly to ensure accurate readings. Always remove test leads before opening the battery compartment.
- Storage: Store the multimeter in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries.
- Calibration: The instrument specifies one year as a cycle for re-calibration, which should be performed under 18℃~28℃, with relative humidity less than 75%.
Figure 14: Internal components including the 10A/250V fuse.
Figure 15: The shock-resistant silicone case provides protection.
10. User Tips
- Battery Life: To maximize battery life, always turn off the multimeter when not in use. The automatic shut-down feature will activate after 15 minutes of inactivity.
- Test Lead Care: Keep your test leads clean and free from damage. Inspect them regularly for any signs of wear or fraying, and replace them if necessary to ensure accurate and safe measurements.
- Environmental Conditions: For optimal performance and accuracy, use the multimeter within the recommended operating temperature of 0-40℃.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
