WhisperPhone Expansion Kit

This accessory kit allows you to increase the distance between the two Duet handsets to approximately up to nearly 6 metres, giving users greater flexibility during paired learning activities.

The kit also includes a BioFilter, designed to help reduce the spread of germs and support a cleaner, safer learning environment.

Expansion Pak kit includes:
2 x Expansion voice tubes
2 x Tube Connectors
1 x Bio filter to minimize the spread of germs

Kit does not include Duet endpoints.b21b2

Ref.nr. 90012 – Expansion Kit for WhisperPhone Duet


WhisperPhone® Duet is an acoustical telephone that enhances student-to-student and teacher-to-student reading activities.

Duet keeps classrooms quieter by creating and acoustically-clear connection between two readers. Duet also helps develop reading skills and encourages expressive reading.

Kids will love Duet for the fun and adventure!

Duet is a perfect tool for paired reading exercises by encouraging students to work together and help each other learn.

Length up to 91 cm.

Ref.nr. 90007 – WhisperPhone Duet