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  Testo 0554 0452 Sound Level Calibrator 94 dB, 114 dB 1000Hz [0554 0452]; 498-0095

  Testo

  THÔNG SỐ KỸ THUẬT Sound Output 94 dB, 114 dB Frequency 1000Hz Accuracy ±0.5 dB Microphone Size 1 in, 1/2 in Battery Life 40 h Bat...

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