Browse hierarchy: [Ear, Nose, Throat (EN)](/submissions/EN) → [Subpart B — Diagnostic Devices](/submissions/EN/subpart-b%E2%80%94diagnostic-devices) → [21 CFR 874.1080](/submissions/EN/subpart-b%E2%80%94diagnostic-devices/874.1080) → EWA — Set, Audiometer Calibration

# EWA · Set, Audiometer Calibration

_Ear, Nose, Throat · 21 CFR 874.1080 · Class 1_

**Canonical URL:** https://fda.innolitics.com/submissions/EN/subpart-b%E2%80%94diagnostic-devices/EWA

## Overview

- **Product Code:** EWA
- **Device Name:** Set, Audiometer Calibration
- **Regulation:** [21 CFR 874.1080](/submissions/EN/subpart-b%E2%80%94diagnostic-devices/874.1080)
- **Device Class:** 1
- **Review Panel:** [Ear, Nose, Throat](/submissions/EN)

## Identification

An audiometer calibration set is an electronic reference device that is intended to calibrate an audiometer. It measures the sound frequency and intensity characteristics that emanate from an audiometer earphone. The device consists of an acoustic cavity of known volume, a sound level meter, a microphone with calibration traceable to the National Bureau of Standards, oscillators, frequency counters, microphone amplifiers, and a recorder. The device can measure selected audiometer test frequencies at a given intensity level, and selectable audiometer attenuation settings at a given test frequency.

## Classification Rationale

Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 874.9.

## Recent Cleared Devices (2 of 2)

| Record | Device Name | Applicant | Decision Date | Decision |
| --- | --- | --- | --- | --- |
| [K934432](https://fda.innolitics.com/submissions/EN/subpart-b%E2%80%94diagnostic-devices/EWA/K934432.md) | OTOVIEW ENDOSCOPY SYSTEM | Smith & Nephew Richards, Inc. | Apr 25, 1994 | SESE |
| [K780474](https://fda.innolitics.com/submissions/EN/subpart-b%E2%80%94diagnostic-devices/EWA/K780474.md) | AUDIOMETER CALIBRATOR MODEL RA 310 | Tracor Instruments, Inc. | Mar 30, 1978 | SESE |

## Top Applicants

- Smith & Nephew Richards, Inc. — 1 clearance
- Tracor Instruments, Inc. — 1 clearance

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**Source:** [https://fda.innolitics.com/submissions/EN/subpart-b%E2%80%94diagnostic-devices/EWA](https://fda.innolitics.com/submissions/EN/subpart-b%E2%80%94diagnostic-devices/EWA)

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