Thiết bị hiệu chuẩn máy đo độ ồn Hangzhou Aihua AWA6221C sound calibrator 114dB
PERFORMANCE SPECIFICATIONS
Normal sound pressure level: 114dB Output frequency: 1000Hz
Sound level accuration: ±0.3 dB(+23 ℃) Frequency accuration: ±2%
±0.5 dB(0 ℃+50 ℃) Distortion(THD): <2%
Class 2 (IEC 60942:2003)
POWER SUPPLY
Power : Battery 1×6F22(9V) Nominal Operating Current: 20 mA