This portable audiometer weighing 5kg is a new addition to the market and features sequential screening. The 1000 + OTO-SCREEN meets the O.S.H.A. C.H.D.P. The operator is placed in full control of the screening process and can use the quiet soft membrane switches. The fatigue factor is eliminated due to sequential screening. The sequential feature is included in the 1000 + OTO-SCREEN as optional and users access high-quality features in this standard threshold & screening audiometer. With it, advances are made of the pure tone air conduction threshold and screening tests for hearing. Engineered to be compliant with ANSI 3:6 1996. ANSI 3.21 1978 (R 1997) Methods for pure-tone threshold audiometry. The following frequency ranges are present: Standard Mode dB (Threshold Level) 0 to 90dB in 5dB steps. Frequency Range: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz. OTO-SCREEN Mode - dB (Threshold Level) 10 to 35dB in 5dB