Overview
The FNIRSI FDM01 is more than just a noise meter; it is a complete environmental diagnostics tool. Designed for professionals and hobbyists alike, it measures sound pressure levels (SPL) from 30 dB to 130 dB with high sensitivity. Whether you are checking for legal noise compliance in a factory, setting up a home theater, or monitoring ambient conditions in a library, the FDM01 provides instant, accurate data. Its VA high-definition color screen ensures clear readability in both low-light and bright environments.
Key Features
- 3-in-1 Monitoring: Displays noise level (dB), temperature (°C/°F), and humidity (%RH) simultaneously.
- Professional Weighting: A-weighting with FAST (125 ms) and SLOW (1 s) response modes.
- Smart Alarm System: Red backlight alert when noise exceeds preset threshold.
- Max/Min/Avg Modes: Track peak, minimum, and average sound levels over time.
- USB-C Rechargeable: Built-in 600 mAh lithium battery.
- Windshield Included: Sponge cover reduces wind interference for outdoor use.
Technical Specifications
| Feature | Specification |
|---|---|
| Measurement Range | 30 dB – 130 dB |
| Accuracy | ±1.5 dB (94 dB @ 1 kHz) |
| Frequency Response | 31.5 Hz – 8.5 kHz |
| Resolution | 0.1 dB |
| Sample Rate | 2 times per second |
| Microphone | 6 mm High-Sensitivity Condenser |
| Temperature Range | -10°C – 50°C |
| Humidity Range | 20% – 85% RH |
| Battery | 600 mAh Lithium-ion (USB-C) |
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