1. Introduction
The TOTAL TMT410004 Digital Clamp Meter is a versatile and reliable tool designed for precise electrical measurements. Featuring a high-resolution 6000-count display, it offers comprehensive capabilities including AC current, AC/DC voltage, resistance, capacitance, frequency, diode testing, and temperature measurement. Its user-friendly design incorporates a data hold function, backlight, and built-in flashlight for enhanced visibility and safe operation in various environments. This manual provides essential information for safe and effective use of your clamp meter.
2. Safety Information
Always adhere to safety precautions when using electrical testing equipment.
- CAT III 1000V, CAT IV 600V Safety Rating: This device is rated for Category III installations up to 1000V and Category IV installations up to 600V. Ensure you understand these ratings and do not exceed them.
- Non-Contact Voltage (NCV) Detection: Use the NCV feature to detect live wires without physical contact, enhancing safety.
- Inspect Before Use: Before each use, inspect the meter, test leads, and accessories for any damage. Do not use if damaged.
- Proper Function Selection: Always select the correct function and range for your measurement to prevent damage to the meter or injury.
- Avoid Live Circuits: Do not measure resistance, continuity, or diode on live circuits.
- Wear Personal Protective Equipment (PPE): Always wear appropriate safety glasses and insulated gloves when working with electrical circuits.
- Keep Dry: Do not use the meter in wet environments.
- Battery Safety: Ensure batteries are correctly installed. Replace batteries when the low battery indicator appears.
3. Product Features
- High-Resolution 6000 Counts Display: Provides clear and accurate readings, even in varying light conditions.
- Comprehensive Measurement Capabilities: Measures AC current, AC/DC voltage, resistance, capacitance, frequency, diode, and temperature.
- User-Friendly Design: Includes a data hold function to freeze readings, a backlight for low-light visibility, and a built-in flashlight for illuminating work areas.
- Overload Protection: Equipped with double fuses for enhanced safety and durability.
- Non-Contact Voltage (NCV) Detection: Safely detects AC voltage without direct contact.
- Portable Design: Comes with a carrying bag for convenient storage and transportation.
4. Product Overview
Familiarize yourself with the components of your TOTAL TMT410004 Digital Clamp Meter.

Figure 4.1: Front view of the TOTAL TMT410004 Digital Clamp Meter, showing the display, rotary dial, function buttons, clamp jaws, and test lead input ports.

Figure 4.2: Illustration of the meter's multi-function and auto-ranging capabilities, including voltage, current, resistance, capacitance, and frequency measurements.
5. Setup and Operation
5.1 Battery Installation
The meter requires batteries for operation. Refer to the battery compartment on the back of the device for proper installation. Ensure correct polarity.
5.2 General Operation
- Power On/Off: Turn the rotary dial from "OFF" to the desired measurement function to power on the meter. Turn back to "OFF" to power off.
- Function Selection: Use the rotary dial to select the primary measurement type (e.g., V~ for AC Voltage, A~ for AC Current).
- Range Selection (Auto-Ranging): The TMT410004 features auto-ranging, which automatically selects the appropriate measurement range.
- "FUNC" Button: Press the "FUNC" button to cycle through sub-functions within a selected rotary dial position (e.g., AC/DC voltage, diode/continuity).
- "HOLD" Button: Press the "HOLD" button to freeze the current reading on the display. Press again to release.
- Backlight/Flashlight: The meter includes a backlight for the display and a built-in flashlight. Activate these features as needed for improved visibility.
5.3 Specific Measurement Instructions
5.3.1 AC Current Measurement (Clamp Function)
To measure AC current, ensure the rotary dial is set to an AC current range (e.g., 60/600A or Inrush 1000A). Open the clamp jaws by pressing the trigger and enclose only one conductor of the circuit. The reading will appear on the display.

Figure 5.1: Measuring AC current by clamping around a single conductor.
5.3.2 AC/DC Voltage Measurement
Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to "V~" for AC voltage or "V-" for DC voltage. Connect the test probes across the circuit or component to be measured. Read the voltage value on the display.
5.3.3 Resistance Measurement
Ensure the circuit is de-energized. Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to "Ω". Connect the test probes across the component. Read the resistance value on the display.
5.3.4 Continuity Test
Ensure the circuit is de-energized. Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to the continuity/diode position and press "FUNC" until the continuity symbol ())) is displayed. Connect the test probes across the circuit. A continuous beep indicates continuity.
5.3.5 Diode Test
Ensure the circuit is de-energized. Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to the continuity/diode position and press "FUNC" until the diode symbol (→|) is displayed. Connect the red probe to the anode and the black probe to the cathode of the diode. The forward voltage drop will be displayed. Reverse the probes; an open circuit (OL) indicates a good diode.
5.3.6 Capacitance Measurement
Ensure the capacitor is discharged before testing. Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to the capacitance position. Connect the test probes across the capacitor. Read the capacitance value on the display.
5.3.7 Frequency/Duty Cycle Measurement
Insert the red test lead into the "VΩmA" input jack and the black test lead into the "COM" input jack. Set the rotary dial to the Hz/% position. Connect the test probes to the signal source. The frequency (Hz) or duty cycle (%) will be displayed. Use the "FUNC" button to switch between frequency and duty cycle.
5.3.8 Temperature Measurement
Insert the temperature probe into the "VΩmA" and "COM" input jacks, ensuring correct polarity. Set the rotary dial to the °C/°F position. The ambient temperature will be displayed. Place the probe tip on or near the object whose temperature you wish to measure. The display will show the temperature in Celsius or Fahrenheit.

Figure 5.2: Using the temperature probe to measure the temperature of a liquid.
5.3.9 Non-Contact Voltage (NCV) Detection
Set the rotary dial to the "NCV/LIVE" position. Move the top of the clamp meter near the conductor or outlet. The meter will beep and an LED will light up (green for low voltage, red for high voltage) to indicate the presence of AC voltage without direct contact.

Figure 5.3: NCV detection showing green LED for low voltage and red LED for high voltage.
6. Maintenance
- Cleaning: Wipe the meter with a dry, soft cloth. Do not use abrasives or solvents.
- Battery Replacement: When the low battery indicator appears on the display, replace the batteries immediately to ensure accurate readings.
- Storage: If the meter is not used for an extended period, remove the batteries to prevent leakage. Store in a cool, dry place away from direct sunlight.
- Fuse Replacement: The meter is equipped with double fuses for overload protection. If a fuse blows, replace it with a fuse of the same type and rating. Refer to the specifications for fuse details.

Figure 6.1: Internal view highlighting the double fuse protection.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not power on. | Dead or incorrectly installed batteries. | Check battery installation; replace batteries if necessary. |
| "OL" displayed during measurement. | Overload or open circuit. | Ensure the measurement range is appropriate. Check for open circuits. |
| Inaccurate readings. | Low battery, incorrect function/range, or environmental interference. | Replace batteries, select correct function/range, move away from strong electromagnetic fields. |
| No continuity beep. | Open circuit or incorrect function selected. | Check the circuit for breaks. Ensure continuity mode is selected. |
8. Specifications
| Specification | Value |
|---|---|
| Model Number | TMT410004 |
| Display | 6000 Counts LCD |
| AC Voltage | Up to 750V |
| DC Voltage | Up to 1000V |
| AC Current | Up to 1000A |
| Resistance | Up to 60MΩ |
| Capacitance | Up to 100mF |
| Frequency | Up to 10MHz |
| Temperature | -20°C to 1000°C |
| Safety Rating | CAT III 1000V, CAT IV 600V |
| Power Source | Battery Powered (Batteries not included) |
| Item Weight | 690 g |
| Product Dimensions | 28 x 6 x 13 cm |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official TOTAL website. Keep your purchase receipt as proof of purchase.
Manufacturer: TOTAL
Contact: Refer to the official TOTAL website or product packaging for customer service contact details.





