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AMBCO 650A Audiometer
Portable, light weight
Easy to use tone switch
Tone present indicator
Plug-in 110 or 220 volt, 650A
Plug-in and battery, 650AB
Battery life indicator
Five year warranty
Exceeds all specifications
Steady and pulsed tone
Custom carrying bag
Meets or exceeds ANSI S3.6 1989, (ASA 81-1989) ISO 389-1985, C.H.D.P, O.S.H.A, E.P.S.D.T. F.A.A., Police, Divers, requirements.
Frequency Range: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz Accuracy better than ? 3%, (steady and pulsed tone)
Hearing Threshold Range: 0 to 90dB in 5dB steps Accuracy better than ? 2 dB
Harmonic Distortion – less than 3%
Power: 110-230 VAC, 50-60 HZ UL, C.S.A. approved power supply. Long hour operation on one 9 volt battery (650AB).
Total Weight less than 4.5 Ibs (complete with headset, TDH 39 earphones, patient response, audiogram pad and carrying bag.)