Check out Univox Digi RS!
Univox Digi RS (Radio System) is an easy-to-use RF system adapted for people with hearing impairment. Use it with a stationary transmitter for teaching, seminars, meetings, simultaneous interpretation, product demonstrations, talks, sermons, workout etc.
Or use it with bodypack transmitter for tour guides!
Light weight, digital, wireless body pack receivers/transmitters, with rechargeable batteries. Digi RS-R receiver can be used with assistive listening neckloop as well as headphones. Frequency range 821-832 and 863-865 MHz (options available for other frequencies). Range up to 50 m /100 m depending on transmitter.
The system delivers a wireless and clear audio of the highest quality that ensures accessibility for people with hearing impairment.