GBX20

Extension Module 

• 4.3 inch (272x480) TFT color LCD
• 20 per page (each module contains 2 pages, for up to 40 lines per module)
• Combine up 4 daisy-chained modules for 160 contacts/extensions
• BLF, call park /pick-up, speed-dial, presence, intercom, voice conferencing transfer/forward and more