1. Introduction
The Aicevoos AS-118D is a smart digital multimeter designed for precise electrical measurements. It features an automatic ranging function (Smart Mode) that simplifies operation by automatically identifying the measurement type and selecting the optimal range. This compact and portable device is suitable for both professional electricians and DIY enthusiasts for various applications, including automotive diagnostics and home electrical troubleshooting.
Image: The Aicevoos AS-118D Smart Digital Multimeter, showcasing its large, clear display with multiple measurement indicators.
2. Safety Information
Your safety is paramount when using electrical testing equipment. Please read and understand all safety warnings and operating instructions before using the AS-118D multimeter. Failure to do so may result in electric shock, fire, or damage to the instrument.
- IEC CAT.III 600V Certification: This device is certified to IEC CAT.III 600V, CE, FCC, and RoHS standards, ensuring a high level of safety for measurements in distribution boards, circuit breakers, wiring, and cables.
- Overload Protection: Equipped with a 10A fuse and overload protection to prevent damage from excessive current.
- Silicone Casing: The protective silicone casing provides enhanced protection against drops and helps prevent electrical leakage.
- Always inspect the test leads for damage before use. Do not use if insulation is compromised.
- Do not apply voltage or current that exceeds the maximum specified limits for the multimeter.
- Ensure the correct function and range are selected before making measurements.
- Avoid using the multimeter in wet environments or during electrical storms.
- When measuring current, always connect the multimeter in series with the load.
- When measuring voltage, always connect the multimeter in parallel with the circuit.
3. Product Features
- Smart Mode: Automatically detects and measures voltage, resistance, capacitance, and more, selecting the best resolution without manual intervention.
- True RMS Measurement: Accurately measures true root mean square (TRMS) values for non-linear loads.
- Compact Design: With a thickness of only 2 cm, it is highly portable.
- Large 4-inch LCD Color Display: Provides clear and easy-to-read measurements, even in dimly lit areas.
- Integrated Flashlight: Enhances visibility in dark working conditions.
- Wide Range of Measurements: Capable of measuring AC/DC Voltage, AC/DC Current, Resistance, Continuity, Capacitance, Frequency, Diodes, Temperature, Non-Contact Voltage (NCV), and Live Wire detection.
- Automatic Power Off: Shuts down after 10 minutes of inactivity to conserve battery life.
Image: The Aicevoos AS-118D multimeter's slim profile, emphasizing its portability.
Image: The multimeter in use, demonstrating its backlit LCD display and flashlight for improved visibility.
4. Package Contents
Upon opening your Aicevoos AS-118D package, please verify that all the following items are included:
- 1x AS-118D Smart Digital Multimeter
- 1x Cloth Bag
- 1x Protective Silicone Case
- 1 set of Test Leads (Red and Black)
- 1x K-Type Temperature Probe
- 1x User's Manual (this document)
- 2x 1.5V AAA Batteries
Image: A visual representation of all items included in the Aicevoos AS-118D product package.
5. Setup
- Battery Installation: Open the battery compartment on the back of the multimeter. Insert the two 1.5V AAA batteries, ensuring correct polarity. Close the compartment securely.
- Protective Case: Slide the multimeter into the provided silicone protective case for added durability and grip.
- Connecting Test Leads:
- Insert the red test lead into the "VΩHz" input jack.
- Insert the black test lead into the "COM" (common) input jack.
- For current measurements (Amps), insert the red test lead into the "10A" input jack and the black lead into "COM".
6. Operating Instructions
The AS-118D multimeter is designed for ease of use, primarily operating in Smart Mode. Press the power button to turn the device on.
6.1 Smart Mode (Automatic Measurement)
By default, the multimeter starts in Smart Mode. In this mode, the device automatically identifies the type of measurement (AC/DC voltage, resistance, continuity, capacitance) and selects the appropriate range. Simply connect the test leads to the circuit or component you wish to measure, and the reading will appear on the display.
Image: The multimeter's display in Smart Mode, illustrating the automatic measurement capabilities with an analog bar.
6.2 Specific Measurement Functions
While Smart Mode handles most common measurements, you can manually select specific functions using the function buttons below the display.
- Voltage (AC/DC): Connect test leads to the circuit in parallel. The multimeter will automatically detect AC or DC voltage in Smart Mode.
- Current (AC/DC): Ensure the red lead is in the "10A" jack. Connect the multimeter in series with the circuit.
- Resistance (Ω): Connect test leads across the component. Ensure the circuit is de-energized.
- Continuity Test (
): Place leads across the circuit or component. A beep indicates continuity. - Diode Test (): Connect leads across the diode. The display shows the forward voltage drop.
- Capacitance (F): Connect leads across the capacitor. Ensure the capacitor is discharged before testing.
Image: The multimeter connected with test leads, showing typical voltage and current measurements.
Image: The multimeter performing a capacitance measurement on an electrical component.
- Frequency (Hz): Connect leads to the signal source.
- Temperature (°C/°F): Connect the K-type temperature probe to the input jacks. The display will show the temperature.
Image: The multimeter showing a temperature measurement using the connected K-type probe.
- NCV (Non-Contact Voltage): Hold the top of the multimeter near an AC voltage source. The device will detect voltage without physical contact and indicate with an audible alarm and visual alert.
- Live Wire Detection: Use the NCV function or a dedicated live wire test mode (if available via function button) to identify live electrical wires.
7. Maintenance
- Cleaning: Use a soft, damp cloth to clean the multimeter's casing. Do not use abrasive cleaners or solvents.
- Battery Replacement: When the low battery indicator appears on the display, replace the AAA batteries promptly to ensure accurate readings.
- Storage: Store the multimeter in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries.
- Test Lead Inspection: Regularly inspect test leads for any signs of damage, such as cracked insulation or exposed wires. Replace damaged leads immediately.
8. Troubleshooting
If you encounter issues with your AS-118D multimeter, refer to the following common troubleshooting steps:
- No Display/Power: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate Readings: Ensure test leads are properly connected and not damaged. Verify the correct measurement function is selected (if not in Smart Mode). Check for external interference.
- No Continuity Beep: Ensure the circuit is de-energized. Check if the continuity function is active.
- "OL" or Overload Indication: The measured value exceeds the selected range. In Smart Mode, the device should auto-range; if "OL" persists, the value is beyond the device's maximum capacity.
- Automatic Shutdown: This is a normal power-saving feature. Press any button to reactivate the device.
For persistent issues, contact Aicevoos customer support.
9. Specifications
The following table outlines the key technical specifications of the Aicevoos AS-118D Smart Digital Multimeter:
Image: Detailed technical specifications table for the AS-118D multimeter.
- Brand: Aicevoos
- Model: AS-118D
- Power Source: AC (device uses AAA batteries for operation, AC source likely refers to charging or input type, but for a multimeter, it's typically battery-powered for portability)
- Style: Smart Multimeter
- Color: Black
- Compliance: IEC 1010, CE, FCC, RoHS
- Operating Temperature: Up to 120°C (This seems unusually high for an operating temperature for the device itself, typically refers to probe limits or specific component limits. User should refer to the actual product manual for precise operating environment temperature.)
- Measurement Type: Ammeter, Ohmmeter, Voltmeter, Multimeter, LCR Meter (Capacitance/Resistance)
10. Warranty and Support
Aicevoos products are manufactured to high-quality standards. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included in your product packaging or visit the official Aicevoos website. Please retain your proof of purchase for any warranty claims.