The Ambco 650A/650AB Pure Tone Audiometer is a portable, light weight audiometer that is ideal for schools, family practice or professionals on the go. The 650AB operates as a plug-in with an included 110 or 220 volt adapter or an optional 9 volt battery. It has an easy to use tone switch, tone present and patient response indicator, with both steady and pulsed tones.
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.)