1. Introduction
The ANENG AN9002 is a versatile Bluetooth Digital Multimeter designed for accurate and reliable electrical measurements. It features auto-ranging capabilities, True RMS for precise AC measurements, and a 6000-count display. This multimeter can measure AC/DC voltage, current, resistance, continuity, capacitance, diodes, and temperature. Its Bluetooth connectivity allows for real-time data viewing and logging on a mobile device, making it an ideal tool for both professional and DIY applications.

2. Setup
2.1 Package Contents
Please verify that all items are present in the package:
- 1 x ANENG AN9002 Digital Multimeter
- 1 x Combination Lead (4 connection sockets, 2 PVC cables, 2 copper needles, 2 U-shaped inserts, 2 meter pens, 4 alligator clips, 2 puncture needles)
- 2 x AA Batteries
- 1 x Multimeter Test Lead
- 1 x Temperature Line
- 1 x Instruction Manual
- 1 x Storage Bag
2.2 Battery Installation
The ANENG AN9002 Multimeter requires two AA batteries for operation. To install or replace batteries:
- Ensure the multimeter is turned OFF.
- Locate the battery compartment cover on the back of the device.
- Use a screwdriver to open the battery compartment.
- Insert two AA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover and secure it with the screw.
2.3 Initial Power On
To power on the multimeter, rotate the central dial from the 'OFF' position to any desired measurement function (e.g., 'AUTO'). The display will illuminate.
2.4 Bluetooth Connection and App Installation
The ANENG AN9002 features Bluetooth connectivity, allowing you to view real-time measurement data on your smartphone via a dedicated application. Follow these steps to set up the Bluetooth connection:
- Download the App: Scan the QR code provided in the manual or on the product packaging to download the 'Bluetooth DMM' application. Alternatively, you can search for 'Bluetooth DMM' in your device's app store.
- Install the App: Follow the on-screen prompts to install the application on your smartphone. You may need to allow installation from unknown sources if downloading directly via APK.
- Launch the App: Open the 'Bluetooth DMM' app. You can choose to log in or proceed as a guest.
- Activate Multimeter Bluetooth: Turn on the multimeter by rotating the dial to any function. Then, press and hold the 'Hz%' button for more than two seconds. The display will show a Bluetooth symbol, indicating that the Bluetooth function is active.
- Connect in App: In the app, navigate to the connection screen (often labeled 'Management' or similar). Tap on the Bluetooth symbol to initiate scanning for devices. Select 'Bluetooth DMM' from the list of found devices to connect.


Video 1: Official ANENG 9002 Multimeter demonstration, including app download and Bluetooth connection process.
3. Operating Instructions
The ANENG AN9002 offers a wide range of measurement functions. Always ensure the correct function is selected and test leads are properly connected before taking measurements.
3.1 Basic Measurements
- AC/DC Voltage Measurement: Rotate the dial to the 'V' position. The multimeter will automatically detect AC or DC voltage. Connect the red test lead to the 'VΩHz' input and the black test lead to the 'COM' input. Apply probes to the circuit.

- AC/DC Current Measurement: Rotate the dial to the 'A' (Amperes) or 'mA/μA' (milliamperes/microamperes) position. Connect the red test lead to the appropriate current input ('10A' for high current, '600mA Max' for low current) and the black test lead to 'COM'. Connect the multimeter in series with the circuit.
- Resistance Measurement: Rotate the dial to the 'Ω' (Ohms) position. Connect the red test lead to 'VΩHz' and the black test lead to 'COM'. Apply probes across the component to measure resistance.
- Continuity Test: Rotate the dial to the continuity symbol (speaker icon). Connect the red test lead to 'VΩHz' and the black test lead to 'COM'. If the circuit is continuous, the multimeter will emit an audible beep.
- Capacitance Measurement: Rotate the dial to the 'F' (Farad) position. Connect the red test lead to 'VΩHz' and the black test lead to 'COM'. Connect probes across the capacitor.

- Diode Test: Rotate the dial to the diode symbol. Connect the red test lead to 'VΩHz' and the black test lead to 'COM'. Place the red probe on the anode and the black probe on the cathode of the diode.
- Temperature Measurement: Use the included temperature probe. Connect it to the appropriate inputs (usually 'VΩHz' and 'COM' or dedicated temperature inputs if available). Rotate the dial to the temperature symbol (°C/°F).
3.2 Advanced Features
- Auto-Ranging: The multimeter automatically selects the appropriate measurement range, simplifying operation.
- True RMS: Provides accurate readings for non-sinusoidal AC waveforms.
- Data Hold (HOLD): Press the 'HOLD' button to freeze the current reading on the display. Press again to release.
- MAX/MIN: Press the 'MAX/MIN' button to display the maximum or minimum measured value during a measurement session.

- Non-Contact Voltage (NCV) Induction: This feature allows for detection of AC voltage without direct contact. Rotate the dial to the 'NCV' position and bring the top of the multimeter near a live wire. The device will indicate the presence of voltage.

- Backlight: The large LCD display features a backlight for improved readability in low-light conditions.
- Auto Shut-off: To conserve battery life, the multimeter will automatically power off after a period of inactivity.
- Back Bracket Design: A built-in stretchable support frame on the back allows for convenient hands-free operation and adjustable viewing angles.

4. Maintenance
4.1 Cleaning
Wipe the multimeter's casing with a damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before use or storage.
4.2 Battery Replacement
Refer to section 2.2 for detailed instructions on battery replacement. Replace batteries promptly when the low battery indicator appears on the display.
4.3 Fuse Replacement
The ANENG AN9002 is equipped with double fuse protection. If the multimeter fails to measure current, the fuse may need replacement. This procedure should only be performed by qualified personnel.
- Ensure the multimeter is turned OFF and all test leads are disconnected.
- Open the battery compartment cover as described in section 2.2.
- Carefully remove the circuit board to access the fuses.
- Replace the blown fuse(s) with fuses of the same type and rating (e.g., Fused 10A Max, Fused 600mA Max).
- Reassemble the multimeter, ensuring all components are securely in place.
4.4 Storage
When not in use for extended periods, remove the batteries to prevent leakage. Store the multimeter in its provided storage bag in a cool, dry place away from direct sunlight and extreme temperatures.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Multimeter does not power on. | Dead or incorrectly installed batteries. | Check battery polarity or replace batteries. |
| No current measurement. | Blown fuse. | Replace the appropriate fuse (refer to section 4.3). |
| Inaccurate readings. | Incorrect function selected; poor test lead connection; environmental interference. | Verify function dial position; ensure leads are securely connected; move away from strong electromagnetic fields. |
| Bluetooth connection fails. | Bluetooth not activated on multimeter/phone; app issues; distance too far. | Ensure Bluetooth is active on both devices; restart app/multimeter; reduce distance between devices; ensure app is updated. |
| App not functioning correctly. | Outdated app version; compatibility issues with phone OS; corrupted installation. | Check for app updates; ensure phone OS meets requirements; reinstall the app. |
6. Specifications
| Feature | Specification |
|---|---|
| Manufacturer | ANENG |
| Part Number | AN9002 |
| Item Weight | 1.19 pounds |
| Package Dimensions | 8.7 x 5.98 x 1.93 inches |
| Batteries | 2 AA batteries required (included) |
| Color | Golden |
| Style | Professional |
| Power Source | Battery Powered |
| Measurement Accuracy | 1.0% ± 5 digits |
| Battery Cell Type | Alkaline |
| Date First Available | October 3, 2022 |
7. Warranty and Support
ANENG provides service and technical support for the AN9002 Digital Multimeter. For warranty claims, technical assistance, or further inquiries, please refer to the contact information provided with your purchase or visit the official ANENG website.
You can also visit the ANENG Store on Amazon for more product information and support resources.





