Yealink T4U Series Expansion Module, Black

Expand your network with the Yealink T4U Series Expansion Module. The color screen provides legible readouts, and the 20 physical keys allow for fast swapping and dialing. Boasts a 272 x 480 pixel color screen for clear visuals and easy reading. Includes 20 physical keys with dual-color LEDs for fast automatic dialing. Features 3 independent control keys for switching pages. Supports up to 3 daisy-chained modules. Compatible with T43U, T46U and T48U models (sold separately).