Universally compatible AC powered handset with amplified receiver controlled by a rotary (thumb wheel, shown) volume control. Improves listening volume up to 20dB for clearer reception.
- For added receiver volume in noisy surroundings, poor line quality and for the hearing impaired
- Includes a carbon compatible transmitter for clear transmission
- Hearing aid compatible
- Universally compatible with carbon, electret or dynamic transmitters
- Compatible with virtually any telephone with a k-style handset
- Solves compatibility issues and simplifies ordering