MSLHS05 Otoacoustic Emission Detector For Precise Hearing Screening

The MSLHS05 is a handheld otoacoustic emission (OAE) detector designed for early hearing screening and diagnosis. It performs TEOAE and/or DPOAE tests (depending on model) to quickly identify potential hearing impairments.

The device supports Transient-Evoked Otoacoustic Emissions (TEOAE) and Distortion Product Otoacoustic Emissions (DPOAE). Some device variants combine both methods; check the model specification for exact capabilities.

TEOAE uses a click stimulus typically at 60–80 dB SPL. DPOAE uses primary tone pairs (F2/F1 = 1.22) typically at 50–65 dB SPL. Exact stimulus settings depend on the selected test mode.

The MSLHS05 measures otoacoustic emissions across multiple bands in the mid‑to‑high frequency range (typically 1.5–5 kHz). Depending on mode it can test 4 or 6 frequency bands (e.g., 2, 3, 4, 5 kHz or 1.5–4 kHz with additional bands).

Results are reported as PASS or REFER. A signal‑to‑noise (S/N) threshold of 6 dB is used. A PASS is typically recorded when 3 or more of the relevant frequency bands meet the criteria (3 of 4 or 3 of 6, depending on the test mode).

The MSLHS05 has a 2.4-inch color TFT-LCD that shows measurement progress, S/N values and final PASS/REFER results. Operation is via a simple 5-key keypad (Up, Down, Left, Right, OK) for intuitive menu navigation.

The device can store up to 200 test results for up to 50 patients, allowing basic tracking of patient screening history without external storage.

The MSLHS05 is specified with a low internal noise level of approximately 6 dB, which helps improve measurement sensitivity and patient comfort during testing.

It is powered by a built-in rechargeable DC 3.7 V battery. The unit is lightweight (about 215 g) and portable for use in hospitals, clinics and community screening environments. For charge/runtime details, refer to the user manual or supplier.

Yes. OAE testing (both TEOAE and DPOAE) is commonly used for newborn and infant hearing screening. The MSLHS05's PASS/REFER output makes it suitable for screening workflows; ensure proper probe fit and quiet environment for reliable results.

Excess ambient noise, poor probe seal or ear canal debris, patient movement, and middle ear effusion or active ear infections can reduce OAE response and lead to false REFERs. Ensure ears are clear and testing is performed in a quiet environment.

Test duration varies with test type and environmental noise but is generally short — from a few seconds to a few minutes per ear. The device displays measurement progress and S/N in real time.

Regular cleaning of the probe and use of clean/disposable ear tips is recommended. Periodic functional checks and calibration according to local regulations or manufacturer recommendations are advised. Contact the supplier or service center for calibration intervals and procedures.

A REFER indicates that further diagnostic evaluation is recommended. Refer the patient for a full audiological assessment (e.g., diagnostic OAE, auditory brainstem response, and cochlear/medical evaluation) to determine the nature and degree of hearing loss.

Included accessories vary by supplier and package. Typical inclusions may be the probe, ear tips, charging cable and user manual. Disposable or reusable ear tips and service accessories are usually available separately — confirm the package contents with the vendor.