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Extech DV40 Non-Contact Voltage Detector with Built-In Infrared Thermometer

Extech | Voltage Tester

Extech DV40 Non-Contact Voltage Detector with Built-In Infrared Thermometer

MPN / Part No: DV40
Price updated: Sep 24, 2026

The Extech DV40 non-contact voltage tester is capable of measuring AC voltage up to 1000 volts and features a built-in infrared thermometer, making it an ideal tool for electricians and industrial engineers. This multifunctional tool provides high safety and accuracy in troubleshooting electrical systems and inspecting equipment.

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The Extech DV40 Non-Contact Voltage Detector is an advanced, multifunctional tool designed for electricians, industrial engineers, and maintenance teams.

This device combines a powerful non-contact voltage tester with a built-in infrared (IR) thermometer, enabling quick detection of electrical circuits and surface temperature measurement in one unit.

This product is considered an ideal option for industrial, commercial, and residential applications where high safety and measurement accuracy are required.

A standout feature of this device is its ability to detect AC voltage up to 1000 volts utilizing non-contact technology, allowing the user to identify voltage presence without physical contact with wires or connections.

Additionally, its built-in infrared thermometer allows for non-contact surface temperature measurement, which is crucial for checking overheating electrical components, electric motors, and vital connections. The ergonomic design and durable housing of this device make extended use possible without fatigue.

Key Features of Extech DV40 Voltage Tester and Infrared Thermometer

  • Non-contact AC voltage detection up to 1000 volts with high sensitivity
  • Internal infrared thermometer for surface temperature measurement
  • Audible and visual signals for voltage detection
  • Ergonomic design and durable housing for industrial use
  • Inductive voltage detection capability
  • Large and readable display for low-light environments
  • Suitable for troubleshooting electrical systems and inspecting equipment

Technical Specifications

Feature Value
Model DV40
Brand Extech
Device Type Non-contact voltage tester with IR thermometer
AC Voltage Range Up to 1000 volts
Frequency 50/60 Hz
Thermometer Type Non-contact infrared (IR)
Signal Output Audible and visual
Application Industrial, commercial, and residential

Frequently Asked Questions

Is this device suitable for detecting DC voltage?

No, the Extech DV40 is specifically designed for detecting AC voltage and is not suitable for DC voltage.

Does the internal thermometer of this device have high accuracy?

Yes, the internal infrared thermometer is designed for surface temperature measurement in industrial and electrical applications, providing acceptable accuracy.

Does this device require periodic calibration?

Yes, like all precision measuring instruments, it is recommended to calibrate the device periodically to maintain measurement accuracy.

Conclusion

The Extech DV40 voltage tester and infrared thermometer combines the capabilities of non-contact voltage detection and temperature measurement, making it an essential tool for any electrician or industrial engineer.

This device, providing high safety, measurement accuracy, and durable design, allows the user to troubleshoot electrical systems and inspect equipment efficiently and confidently.

If you are looking for a multifunctional and reliable tool for industrial and commercial environments, the Extech DV40 is a smart and professional choice.

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Extech

Extech

United States

Extech is one of the most reputable international brands in the field of test and measurement equipm...

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