Bedrock SM30 Class 2 Measuring Instrument (IEC 61672 Class 2)

The Bedrock SM30 is a high-value Class 2 / Type 2 handheld measuring instrument that covers daily work in environmental, building, and audio applications—without locking essential functionality behind paid options. It is feature-rich out of the box and continues to expand through free firmware updates.

What you can do with the SM30

• Class 2 / Type 2 sound level meter (Fast/Slow/Impulse; A/C/Z-weighting; Leq, SEL).
• Statistical acoustics (L10, L90, etc.).
• Real Time Analyzer (RTA) (1/12, 1/6, 1/3 and 1/1 octave).
• FFT analyzer up to 32768 lines for detailed frequency analysis.
• Room acoustics: RT60 (T20/T30/EDT).
• Noise curves: NR, NC, PNC, NCB, RC, RC Mark II.
• Audio tools: oscilloscope, calibrated audio recording, USB audio device mode (calibrated audio to PC software).
• Electro-acoustics (firmware dependent): THD+N and fundamental frequency estimation.
• Building acoustics (firmware dependent): D, R’, DnT, Dn and SRI/STC.
• More functionality is added through free future firmware upgrades.

Key specifications

• Frequency range: 20 Hz – 20 kHz
• Dynamic range: 24 – 124 dB (with included BAMT2 microphone)
• Display: Full-colour resistive LCD touch screen (240 × 230 px)
• Storage: 8 GB (≥95% available for user data)
• Connectivity: High-speed USB 2.0 for data/audio access
• Power: Integrated long-life battery pack, rechargeable via USB

Standards (per manufacturer documentation)

• IEC 61672 Class 2
• ANSI S1.4 Type 2
• IEC 60268-16 rev. 4
• IEC-62160 class 0 (RTA)
• ISO 3382

What’s included

• All necessary accessories, including microphone, charger, cables, windscreen, and carrying case

Need accredited calibration? If your shop offers it, add an optional ISO/IEC 17025 accredited calibration upgrade at checkout.