MAICO ST 20 Screening audiometer with threshold measurement


Fast and easy screening with ST 20 The basic ST 20 is easy and comfortable to operate. Its unique light point technology combines audiometry anderror free recording in one step. The 8 test frequencies of the ST 20 from 250 Hz to 8 kHz can be changed with two buttons. The solid and sound isolated headphones deliver up to 100 dB hearing level. The intensity can be changed with the slide control in 5 dB steps down to -10 dB. The actual value of frequency / level is indicated by a red light which can be easily marked on the audio-gram paper. The automatic and sliding masking is very easy to operate.

Product Information

Air conduction from 250 Hz to 8 kHz with automatic masking
Bone conduction with automatic masking (ST 20 BC)
Diagnostic functions (ST 20 SISI)
Frequency and intensity indicated by red light
Headphone Holmco 8103 perfect accessory in noisy environments
Test signal:Pure or Pulsed tone
Test frequencies:0,25; 0,5; 1; 2; 3; 4; 6; 8 kHz
Level steps:5 dB noise free
Masking signal:White noise, automatic sliding: AC = -15 dB, BC = + 15 dB distance to test signal level
Masking source:Contra lateral headphone
Standards:IEC 601-1; IEC 645 part 1, class 4; medical directive 93/42/EEC, class IIa
Power supply:Mains 230 V~, 50/60 Hz, app. 4 VA
Dimensions and weight:W x D x H: 29 x 22 x 6 cm /1,9 kg
Standard accessories:Headphone Holmco 8103 power supply cable, audiogram paper
ST 20 Screening audiometer brochure