http://www.audioropa.com/en/products/infrared-transmission-systems/pr-22/

»PR-22+«: High performance pocket receiver for infrared signals - for connection of various hearing components

The »PR-22+« features Automatic Gain Control and very high sensitivity for incoming infrared signals. The high maximum output volume makes it an ideal receiver for people with impaired hearing.

The 3.5 mm audio jack allows the connection of a wide range of different audio components, such as:

Specifications

Frequency range 60 Hz to 12 kHz ± 3 dB
Receiver frequencies 3.8 MHz • 3.3MHz • 2.8 MHz • 2.3 MHz (switchable)
Distortion < 1%
signal-to-noise ratio 60 dB
max. volume 120 dB
Reception angle 360°
Weight ca. 200 g (inkl. Batterien)
PR-22+

A-4037-0, a40370, 4037