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Specifications
The Extech 407730 is a digital sound level meter designed for measuring sound levels from 40 to 130 dB with ±2 dB basic accuracy. It features a 0.1 dB resolution digital display and a fast-response analog bar graph for monitoring changing sound levels.
The meter provides selectable A and C frequency weighting, along with Fast and Slow response modes, making it suitable for a range of general sound and noise measurement applications. Its Max Hold function captures the highest measured sound level.
| Specification | Details |
|---|---|
| Model | Extech 407730 |
| Product Type | Digital Sound Level Meter |
| Sound Range | 40–130 dB |
| Basic Accuracy | ±2 dB |
| Resolution | 0.1 dB |
| Frequency Weighting | A / C |
| Response Time | Fast / Slow |
| Microphone | 0.5" (12.7 mm) condenser |
| Analog Output | AC |
| Display | Digital display with analog bar graph |
| Power | 4 × AA 1.5 V batteries |
| Dimensions | 230 × 57 × 44 mm |
| Weight | 160 g |
| Warranty | 2 years |
| Certifications | CE; NIST available for 407730-NIST |
| Included Accessories | Microphone windscreen, batteries |