Feature:1. Precise Accuracy: With continuous attenuation/step of 5dB and an error margin of less than 1dB, electric pure tone audiometer provides highly accurate results.2. Advanced Technology for Accurate Testing: Utilizing advanced technology and algorithms, audiometer machine can accurately identify and measure sound within different frequency ranges, giving precise hearing assessment results.3. Multiple Functions For Hearing Assessment: Electronic audiometer offers various functions such as hearing assessment, screening, and training. Users can choose different modes and perform corresponding operations based on their specific needs.4. High Accuracy: Audiometer device provides high accuracy, multiple functionalities, and ease of use. It helps users gain a comprehensive understanding of their hearing condition and take appropriate protective and corrective measures.5. Suitable For Fixed Installation: Medical testing audiometer can be used as a desktop device for fixed installation in medical facilities, community centers, industrial enterprises, driving schools, rehabilitation centers, and more.Specification:Item Type: Pure Tone AudiometerApplicability: For individuals with response capability for hearing threshold testingVoltage: 100-240VPlug Type: Testing Frequency: Air Conduction (250-8000)Hz, Bone Conduction (250-6000)Hz, 2% accuracyTesting Range: Air Conduction (-10-120)dB, Bone Conduction (-10-70)dBMasking strength Range: (-10-110)dBDistortion: Air Conduction <2.5%, Bone Conduction <5.5%Accuracy: Continuous Attenuation/Step 5dB, 1dB errorPower Requirements: AC100-240V 50/60Hz 30VAOperating Temperature: 15~35Relative Humidity: 30%~90%Atmospheric Pressure: 98kPa~104kPa, too extreme temperature, humidity and altitude will affect the performance of the equipmentHow To Use:(1) Before installing and using the equipment, you should pay attention to the surrounding environment is quiet and clean, away from radioactive electromagnetic field electronic equipment;(2) After the connection is completed, turn on the power, press the green switch button on the lower right front side of the panel, the display will light up and automatically enter the pure tone test;3Familiarise yourself with the testDemonstration of 1000Hz, 40dB HL strength of the test tone to the subject ear, such as hear then 40dB a lower strength, such as hearing, then 40dB a higher strength, until the subject hears the sound, and then reduce the test tone to the lowest, and then gradually increase the strength of the sound, until the subject to respond to the interruptions of 2-3 seconds, and then give the sound of 2-3 seconds, such as the response is the same, then the formal test. If the response is consistent, the test can be carried out.(1) Air Conducted Audiometry (AC)The purpose of air conduction audiometry is to determine auditory sensitivity at different frequencies. This test can determine air conduction loss, but cannot distinguish between conductive and sensorineural hearing loss. Air conduction hearing threshold threshold setting involves the entire auditory system, including the outer and middle ear in the conductive sector, the cochlea in the sensorineural component and the functional integrity of the auditory nerve. It is the most fundamental part of audiological assessment.A) The pure tone audiometer is switched on and automatically enters the air conduction test.B) Headphone placement allows the subject to remove glasses and earrings. Place the headphones downward from the direction of the top of the head. Adjust the ear cups so that the headphone speaker is directly aligned with the external ear canal. Adjust the length of the headband so that the headphones are securely in place. If the ear cups are not in tight contact with the ear, the low frequency test results will be subject to largeerror.C) Instructing the SubjectBefore the test begins, the subject needs to be introduced to the patient feedback handle buttons that test for pure tone and response. You will hear different sounds in the headphones at different levels of strength. When you hear a sound, press the patient feedback handle button, and when you do not hear a sound, release the patient feedback handle button.D) Sequence of test frequencies1000Hz, 1500Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz, 8000 Hz, 250Hz, 500Hz, 750Hz, 1000Hz, generally the better ear or the healthy ear is tested first, the difference between the thresholds of the 2 1000Hz is more than 10dB, then it should be re tested, such as the difference between the thresholds of the 2 octave frequencies is 20dB, the If the difference between the thresholds of 2 octave frequencies is 20dB, then half octave frequency threshold determination should be done. The duration of sound administration should be 2-3 seconds, and the interval should not be shorter than the duration of sound administration because the full recovery time after acclimatisation is usually 2-3 seconds, and the duration of sound administr