Gaugemaster DCC77 Prodigy Walkaround Adaptor.
The Prodigy Walkaround Adaptor allows a simple connection for two handsets onto the DCC01 Prodigy Express base unit. The Adapter supports all Prodigy control options enabling easy expansion for all Prodigy systems.
It measures 45mm (length) by 45mm (width) by 20mm (height) and has a 50mm cable.