Extech 407730 Digital Sound Level Meter

Extech 407730 Digital Sound Level Meter

Extech 407730 Digital Sound Level Meter

Accurate and Portable Sound Level Monitoring

Ideal for industrial, environmental, and workplace applications, this meter offers high accuracy of ±2 dB across a wide range of 40 to 130 dB. It features both A and C weighting scales, as well as selectable fast or slow response times, allowing you to customize measurements depending on the application.

This sound level meter utilizes a 0.5″ (12.7 mm) condenser microphone for precise readings and includes a digital LCD display with a 0.1 dB resolution, accompanied by a fast-responding analog-style bar graph for visual tracking of sound fluctuations. The Max Hold function captures peak readings, and the device can be tripod-mounted for hands-free, stable measurements over time.

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Key Features Extech 407730 Digital Sound Level Meter

• Measuring range from 40 to 130 dB

• ±2 dB accuracy with 0.1 dB resolution

• A & C weighting options for different frequency sensitivities

• Fast/Slow response time selection for dynamic or steady noise environments

• Max Hold function to capture and display the highest sound level recorded

• Analog AC output for connection to external recording or monitoring devices

• Tripod mountable for continuous or remote operation

• Includes windscreen and four AAA batteries

• Durable, lightweight design for portable use

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Specifications

• Sound Range: 40 to 130 dB

• Accuracy: ±2 dB

• Resolution: 0.1 dB

• Weighting Scales: A & C

• Response Time: Fast and Slow

• Microphone Type: 0.5″ (12.7 mm) condenser

• Analog Output: AC

• Display Type: Digital LCD with analog bar graph

• Dimensions: 230 × 57 × 44 mm (9 × 2.2 × 1.7 in)

• Weight: 160 g (5.6 oz)

• Power Supply: 4 × AAA batteries (included)

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Summary

With its wide 40–130 dB range, ±2 dB accuracy, and multiple response settings, it’s ideal for professionals needing reliable sound measurements in real time. Its easy-to-read digital display, analog output, and ability to mount on a tripod make it a flexible solution for both spot checks and long-term monitoring tasks.