# K961143: Telex Select 2-40 with Adaptive Compression S2-40

- Pathway: 510(k) (Traditional)
- Applicant: Telex Communications, Inc.
- Decided: May 7, 1996 after 47 days
- Product code: ESD (Hearing Aid, Air-Conduction, Prescription)
- Device class: 1
- Regulation: 21 CFR 874.3300
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K913495 (1991). 1 ancestor in all.
1 later device descends from it; 1 cites it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K913495: Telex TDR-7AA Binaural Hear Aid/Wireless FM Rec, Telex Communications, Inc. (1991) Summary page 1.
- (no number) Phonic Ear PE700 Free Ear Auditory Trainer: named in the summary without a submission number
- (no number) Fox AVR/Sonovation Extend Ear: named in the summary without a submission number

## Most influential descendants
- K982683: Telex Select 1-40 with Adaptive Compression (1998), 0 descendants of its own

## Indications for use
to amplify and transmit sound to the ear.

Source page: https://510kreport.com/device/K961143
Methodology: https://510kreport.com/methodology