GBX20Extension Module 4.3 inch (272x480) TFT color LCD20 per page (each module contains 2 pages, for up to 40 lines per module)Combine up 4 daisy-chained modules for 160 contacts/extensionsBLF, call park /pick-up, speed-dial, presence, intercom, voice conferencing transfer/forward and more Datasheet SKU GBX20 Please log in to see price or purchase this item Quantity discounts available QuantityPrice (0) No Reviews yet Ratings and ReviewsNo reviews availableBe the first to Write a Review