The SV 973A is a professional-grade Class 2 sound level meter compliant with IEC 61672-1:2013, featuring a durable MEMS microphone with lifetime warranty. It covers a measurement range of 25–129 dBA (peak 141 dBA) across frequencies from 20 Hz to 10 kHz, exceeding standard Class 2 requirements. With 8 GB internal memory, Bluetooth connectivity, and a mobile app for iOS and Android, it suits both field and lab use. Optional features include 1/1 and 1/3 octave band analysis, WAV recording, RT60 reverberation time measurement, and STIPA speech transmission index analysis. Ideal for occupational hygienists, environmental consultants, and building acoustics professionals.

Key Specifications

• Class 2 IEC 61672-1:2013
• 20 Hz–10 kHz
• 25–129 dBA (peak 141 dBA)
• MEMS microphone with lifetime warranty
• 8 GB internal memory
• Bluetooth
• USB
• A/C/Z weighting
• Slow/Fast/Impulse time constants
• 4× AAA battery 20–38 hours
• 225 g

Applications

• Occupational noise measurement
• Environmental noise monitoring
• Industrial hygiene
• Construction site assessment
• Building acoustics
• Classroom acoustics
• Speech transmission index (STIPA)

Standards & Certifications

IEC 61672-1:2013 Class 2, NIOSH SLM, OSHA, MSHA, ACGIH, IEC 60268-16 (STIPA)