1. Introducció
Thank you for choosing the ANENG 621A Digital Multimeter. This device is a smart, portable, and rechargeable tool designed for precise electrical measurements. It features a color touch screen and automatic range selection, making it suitable for both professional and DIY applications. This manual provides essential information for safe operation, proper use, and maintenance of your multimeter.
2. Informació de seguretat
Always adhere to safety precautions when using any electrical testing equipment. Failure to do so may result in electric shock, injury, or damage to the multimeter or equipment under test.
- No supereu els valors màxims d'entrada for any measurement range. Refer to the specifications section for limits.
- Ensure test leads are properly connected and in good condition before each use. Inspect for any damage to insulation.
- Eviteu el contacte amb circuits actius when connecting or disconnecting test leads.
- Tingueu precaució quan treballeu amb voltages above 30V AC RMS, 42V peak, or 60V DC, ja que representen un perill de descàrrega elèctrica.
- The multimeter is equipped with a double fuse for overload protection. Do not attempt to bypass or replace with incorrect fuses.
- El dispositiu presenta una shockproof ABS casing with a soft rubber grip for enhanced durability and protection against drops. However, avoid unnecessary physical impact.
- Do not operate the multimeter if it appears damaged or if the casing està obert.
- Mantingueu les mans i els dits darrere de les barreres de la sonda a l'hora de fer mesures.
3. Producte acabatview
The ANENG 621A is a compact and versatile digital multimeter. It features a large, backlit color touch screen for clear readings and intuitive operation.
3.1. Components i pantalla

Image: ANENG 621A Digital Multimeter and its comprehensive accessory kit.
The multimeter's display shows measurement values, units, battery status, and selected modes. The touch screen allows for easy selection of functions.

Imatge: Detallada view of the ANENG 621A's sensitive touch screen for function selection.
3.2. Accessoris inclosos
El paquet inclou els articles següents:
- ANENG 621A Digital Multimeter
- Combined Test Lead Set (includes 4 connection plugs, 2 PVC cables, 2 copper needles, 2 U-shaped inserts, 2 measuring pens, 2 alligator clips, 2 piercing needles)
- Standard Multimeter Test Leads
- Sonda de temperatura
- Cable de càrrega USB tipus C
- Manual d'instruccions (aquest document)
- Bossa d'emmagatzematge
4. Configuració
4.1. Càrrega inicial
The ANENG 621A Multimeter is powered by a rechargeable lithium battery. Before first use, or if the battery indicator shows low power, charge the device using the provided USB Type-C cable.
- Connect the Type-C end of the charging cable to the multimeter's charging port.
- Connecteu l'extrem USB-A a un adaptador de corrent USB estàndard (no inclòs) o a un port USB de l'ordinador.
- The battery indicator on the screen will show charging status. Charge until the indicator shows a full battery.

Image: The ANENG 621A Multimeter connected for charging via its Type-C port.
4.2. Connexió dels cables de prova
Always ensure the multimeter is off before connecting or disconnecting test leads.
- Inseriu el cable de prova negre a la COM presa d'entrada (comuna).
- Inseriu el cable de prova vermell into the appropriate input jack for your measurement:
- Per al voltage, Resistance, Capacitance, Diode, Continuity, Frequency, and Temperature measurements, use the VΩHzCAP jack.
- For Current measurements (mA/A), use the 10A/mA jack.
- Ensure a secure connection for both leads.
5. Instruccions de funcionament
The ANENG 621A features a smart mode that automatically identifies measurement types. You can also manually select specific functions via the touch screen.

Imatge: Més deview of various measurement functions and their display on the ANENG 621A multimeter.
5.1. Encendre/apagar
Press and hold the power button (usually indicated by a power symbol) on the touch screen to turn the multimeter on or off.
5.2. Smart Mode (AUTO)
En engegar-lo, el multímetre passa per defecte al mode intel·ligent. En aquest mode, el dispositiu detecta i mesura automàticament el volum de CA/CC.tage, resistance, and continuity without manual selection. Simply connect the test leads to the circuit, and the multimeter will display the relevant measurement.

Image: The ANENG 621A Multimeter in AUTO mode, measuring AC voltage and frequency from a power outlet.
5.3. Selecció manual de funcions
To select a specific measurement function, tap the corresponding icon on the touch screen. Available functions include:
- Volum AC / DCtage (V~ / V-): Measures alternating or direct current voltage. Connect leads in parallel to the circuit.
- AC/DC Current (A~ / A-): Measures alternating or direct current. Connect leads in series with the circuit. Ensure the correct input jack (10A/mA) is used.
- Resistència (Ω): Measures electrical resistance. Ensure the circuit is de-energized before measuring.
- Prova de continuïtat (
): Checks for an unbroken path in a circuit. An audible beep indicates continuity. - Prova de díodes (
): Measures the forward voltagcaiguda e d'un díode. - Capacitat (F): Measures the capacitance of capacitors. Ensure capacitors are discharged before testing.
- Freqüència (Hz): Measures the frequency of an AC signal.
- Temperatura (°C/°F): Use the included temperature probe to measure temperature.
5.4. Vol sense contactetage (NCV) Detecció
La funció NCV permet la detecció del volum de CAtage without direct contact with conductors. This is useful for identifying live wires or checking for voltage in cables.

Image: The ANENG 621A Multimeter detecting non-contact voltage, indicated by signal bars and an audible alarm.
5.5. Detecció de cable en viu
This function helps identify the live wire in an AC circuit. Select the 'Live' function and touch the red test probe to the conductor. The display will indicate if it's a live wire.
5.6. Data Hold (HOLD)
Press the 'HOLD' button on the touch screen to freeze the current reading on the display. Press again to release.
5.7. Llanterna i retroiluminació
The multimeter includes a built-in flashlight for illuminating dark work areas and a backlit display for clear visibility in low-light conditions. Activate these features via the respective icons on the touch screen.

Image: The ANENG 621A Multimeter demonstrating its flashlight and backlit display for use in dim environments.
6. Manteniment
6.1. Neteja
Netegeu el multímetre casing amb anunciamp cloth and mild detergent. Do not use abrasive cleaners or solvents. Ensure the device is off and disconnected from any circuits before cleaning.
6.2. Càrrega de la bateria
Recharge the battery as needed. The multimeter will enter sleep mode automatically if no action is performed for a period, conserving battery life.
6.3. Emmagatzematge
Store the multimeter and its accessories in the provided storage bag in a cool, dry place, away from direct sunlight and extreme temperatures. Remove test leads before storing.

Image: The ANENG 621A Multimeter's shockproof silicone sleeve provides protection against impacts.
7. Solució De Problemes
If you encounter issues with your ANENG 621A Multimeter, refer to the following common problems and solutions:
- Multimeter does not power on: Assegureu-vos que la bateria estigui carregada. Connecteu el cable de càrrega tipus C i deixeu-lo carregar durant almenys 30 minuts abans d'intentar tornar-lo a encendre.
- No reading or 'OL' (Overload) displayed: Check if the test leads are properly connected to the correct input jacks for the selected function. Ensure the circuit is within the multimeter's measurement range. For resistance, ensure the circuit is de-energized.
- Lectures inexactes: Verify that the test leads are making good contact with the circuit. Ensure the correct measurement function is selected. Check for any external interference.
- Continuity test not beeping: Confirm that the circuit path is complete and that the resistance is below the continuity threshold (typically less than 50Ω).
- La pantalla no respon: Try restarting the multimeter. If the issue persists, ensure the battery is adequately charged.
For persistent issues not covered here, please contact ANENG customer support.
8. Especificacions
Below are the technical specifications for the ANENG 621A Digital Multimeter:
| Característica | Especificació |
|---|---|
| Número de model | 621A |
| Mostra | 9999 Counts, Backlit Color Touchscreen |
| Tipus de mesura | Multímetre digital |
| Font d'alimentació | Battery powered (1 Lithium metal battery included) |
| Port de càrrega | USB tipus C |
| Dimensions (L x A x A) | 10 x 10 x 2 cm (3.94 x 3.94 x 0.79 polzades) |
| Pes | 0.6 grams (aprox. 0.02 oz) |
| Classificació de seguretat | CAT III 600V (refer to device markings for specific ratings) |
| Origen | Xina |

Image: Physical dimensions of the ANENG 621A Multimeter.
9. Garantia i Suport
ANENG offers lifetime service and technical support for the 621A Digital Multimeter. For any inquiries, technical assistance, or warranty claims, please contact ANENG customer service through your purchase platform or the official ANENG weblloc.





