Class I acoustic calibrator is a battery-powered sound source. With this class I acustic calibrator, a sonometer and other systems are calibrated directly and quickly.
- Level of sound pressure: 94 dB, 114 dB - Precision class: IEC 942, Klasse 1 - Sound level accuracy: ±0.3 dB (20 °C, 760 mm Hg) - Frequency: 1000 Hz, frequency weighting A, B, C, D