MUSTOOL 3 In 1 Digital Pen Type Multimeter User Manual

1. Introduction

The MUSTOOL 3 In 1 Digital Pen Type Multimeter is a compact and versatile tool designed for various electrical measurements. It combines the functions of a multimeter, a voltage test pen, and a phase sequences meter, making it an essential device for electricians, DIY enthusiasts, and anyone working with electrical systems. This manual provides detailed instructions for safe and effective use of your multimeter.

Video: Product demonstration showcasing various functions and features.

2. Package Contents

Please check the package for the following items:

• 1 x MUSTOOL Pen Type Multimeter (MT007, MT007 Pro, or MT007 Pro-EN model)
• 1 x Detachable Test Lead
• 1 x User Manual

Image: Contents of the product package.

3. Product Features

• 3-in-1 Functionality: Combines Multimeter, Voltage Test Pen, and Phase Sequences Meter.
• True RMS: Provides accurate measurements for non-sinusoidal waveforms.
• Color Display Screen: (MT007 Pro/Pro-EN models) for enhanced readability.
• Automatic Identification: Automatically detects and measures AC/DC voltage, resistance, and continuity.
• Live/Neutral Wire Detection: Non-contact and contact methods for identifying live and neutral wires.
• Phase Sequence Detection: (MT007 Pro/Pro-EN models) for three-phase systems.
• Multiple Measurement Modes: Includes Capacitance, Diode, Continuity, Frequency, and Temperature.
• Integrated Flashlight: For illumination in dimly lit work areas.
• Data Hold: Freezes the current reading on the display.
• Automatic Shutdown: Conserves battery life by turning off after a period of inactivity.
• Voice Broadcast: (MT007 Pro-EN model) for audible readings.

4. Specifications

Model Comparison

5. Setup

5.1 Battery Installation

1. Locate the battery compartment cover on the back of the multimeter.
2. Slide the cover open.
3. Insert one 1.5V AAA battery, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

Image: Battery compartment for AAA battery.

5.2 Connecting Test Leads

The multimeter comes with a detachable test lead. To use it for measurements requiring two probes:

1. Insert the black test lead into the designated port at the bottom of the multimeter.
2. The red probe is integrated into the pen tip.
3. Ensure the test lead is firmly connected before taking any measurements.

Image: Multimeter with test lead connected.

6. Operating Instructions

6.1 Power On/Off

• Power On: Long press the red 'Select' button to turn on the multimeter.
• Power Off: Long press the red 'Select' button again to turn off the multimeter. The device also features an automatic shutdown function after a period of inactivity.

6.2 Auto Mode

Upon powering on, the multimeter defaults to 'Auto' mode. In this mode, it automatically identifies and measures:

• DC Voltage
• AC Voltage
• Resistance
• Continuity

Simply touch the probes to the circuit or component, and the device will display the appropriate measurement. The display will indicate 'DC' for direct current or 'AC' for alternating current.

Image: Multimeter display in 'Auto' mode.

6.3 Manual Mode (Function Selection)

Press the red 'Select' button briefly to cycle through different manual measurement functions. The available functions include:

• Voltage (DC/AC): Measures voltage. The device will automatically detect DC or AC.
• Resistance (Ω): Measures resistance.
• Capacitance (F): Measures capacitance.
• Frequency (Hz): (MT007 Pro only) Measures frequency.
• Diode Test: Checks the functionality and forward voltage drop of diodes.
• Continuity Test: Checks for an unbroken electrical path with an audible buzzer.
• Temperature (°C/°F): Measures ambient temperature.

6.4 Voltage Measurement

In 'Auto' mode or selected Voltage mode, touch the red probe to the positive point and the black probe to the negative point of the circuit. The display will show the voltage reading and indicate 'DC' or 'AC'.

Image: Measuring DC voltage on a battery.

Image: Measuring AC voltage from an outlet.

6.5 Live/Neutral Wire Detection (N/LP Button)

Press the 'N/LP' button to activate the Live/Neutral detection function. This can be used in two ways:

• Non-Contact: Hold the tip of the multimeter near a wire or outlet. The device will indicate 'LUE' (Live) or 'N' (Neutral) on the display, and the LED indicator will change color (red for live, green for neutral).
• Contact: For more precise detection, touch the tip directly to the conductor.

6.6 Phase Sequence Detection (MT007 Pro/Pro-EN only)

In manual mode, press 'Select' until 'PABC' appears on the display. This mode is used to determine the phase sequence in three-phase electrical systems.

6.7 Diode Test

In Diode Test mode, connect the probes across the diode. The display will show the forward voltage drop. If the diode is faulty or connected in reverse, it will show 'OL' (Overload) or a different reading.

Image: Testing a diode (LED strip) with the multimeter.

6.8 Continuity Test

In Continuity Test mode, connect the probes to the two points you want to test. If there is continuity (a complete circuit), the buzzer will sound, and the display will show a low resistance value. If there is no continuity, it will show 'OL'.

6.9 Flashlight

Long press the 'N/LP' button to turn the built-in flashlight on or off. This is useful for illuminating dark work areas.

6.10 Data Hold

Press the 'Hold' button briefly to freeze the current reading on the display. Press it again to release the hold function.

6.11 Voice Broadcast (MT007 Pro-EN only)

The MT007 Pro-EN model features voice broadcast for readings. To disable or enable this feature, press and hold the 'N/LP' button while turning on the device. The broadcast language is English only.

7. Maintenance

• Cleaning: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
• Battery Replacement: Replace the AAA battery when the low voltage indicator appears on the display to ensure accurate readings.
• Storage: Store the multimeter in a cool, dry place away from direct sunlight and extreme temperatures.

8. Troubleshooting

• No Display/Power On: Check if the battery is correctly installed and has sufficient charge. Replace the battery if necessary.
• Inaccurate Readings: Ensure the test leads are properly connected and the probes are making good contact with the circuit. Verify that the correct measurement mode is selected (if not in Auto mode).
• 'OL' on Display: This usually indicates an overload or an open circuit, meaning the measured value is beyond the device's range or there is no connection.

9. User Tips

• Always ensure the probes are clean and free from debris for optimal contact and accurate readings.
• When measuring voltage, always start with the highest range if you are unsure of the expected voltage to prevent damage to the device.
• Utilize the flashlight function in poorly lit environments to improve visibility and safety during measurements.

10. Safety Information

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

• Always exercise caution when working with electricity.
• Do not attempt to measure voltages or currents exceeding the device's specified maximum ratings.
• Ensure your hands are dry and you are standing on an insulated surface when taking measurements.
• Never use the multimeter if it appears damaged or is not functioning correctly.
• Keep the device out of reach of children.

11. Support

For further assistance or detailed technical information, please refer to the official English manual available for download. You can typically find this on the product's support page or by searching for the model number online.

A downloadable English manual is available: Click here to download the English manual