FNIRSI FDM-02 Sound Level Meter 30-130 dBA ±1.5 dB

The FNIRSI FDM-02 Sound Level Meter is a professional-grade instrument designed for accurate noise measurement in various environments. With a measurement range of 30-130 dBA and compliance with IEC651 Type 2 and ANSI S1.4 Type 2 standards, it is ideal for industrial, educational, and residential applications.

Advantages

High accuracy of ±1.5 dB at 1 kHz, dual frequency weighting (A & C), fast and slow time weighting, backlit LCD display, data hold, MAX/MIN recording, auto power off, and over/under range indication.

Suitable for

• Noise monitoring in factories and workshops
• Classroom and office sound level checks
• Home environment noise assessment
• HVAC system noise measurement
• Community noise surveys

Key specifications

• Measurement Range: 30-130 dBA
• Accuracy: ±1.5 dB (at 1 kHz)
• Frequency Range: 31.5 Hz - 8 kHz
• Resolution: 0.1 dB
• Frequency Weighting: A & C
• Time Weighting: Fast (125ms) / Slow (1s)
• Microphone: 1/2-inch Electret Condenser
• Display: Backlit LCD
• Dynamic Range: 50 dB
• Power: 3x AAA batteries (not included)
• Auto Power Off: 10 minutes
• Operating Temperature: 0°C to 40°C
• Standards: IEC651 Type 2, ANSI S1.4 Type 2

Recommendations

For best results, calibrate the meter before each use. Avoid exposure to extreme temperatures and humidity. Replace batteries when the low battery indicator appears.