Grandstream GXP2200EXT Expansion Module for Gxp2200

Expansion module equipped with a large 128x384 graphic LCD for rich, feature-packed graphics. Each unit provides 20 programmable buttons and includes 2 page-switch keys, enabling up to 40 extensions per extension module. Modules can be daisy-chained up to 4 units to deliver a total of up to 160 programmable buttons. Supports Busy Lamp Field (BLF).