The HOMOTH Tymp 4000-M PC-diagnostic module it is able to do a full-automatic impedance measurement within a few seconds. Every function, as well as curves and data is presented at the PC monitor. The results can be verified before documentation to avoid misprintings. The device is used in the doctors practice as well as in the clinic. The measurement of the compliance lasts only two seconds and works exellent used on children and restless patients. The test results are objective and independent from the assistance of the patient. Because of the extreme easy way to use, the examination can be made directly at the working place and fits in well into the general examination. The test automatic enables to operate the Tymp 4000 with only one hand, so the head of the patient can be held steady with the other hand. For measurement the probe is held against the outer ear. A two coloured lamp on top of the handle indicates the correct fitting of the probe and the measurement is starting automatically. It is possible to measure the stapedius reflex ipsi- and contralateral. During this measurement, the middle ear pressure is held in the outer ear canal. The data and measured curves can be stored on harddisc or transmitted to a practice software.