Grandstream GBX20 backlit LCD extension module headset Delivers a continuous 500 watts

Delivers a continuous 500 watts of power

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Grandstream GBX20 backlit LCD extension module headset Delivers a continuous 500 wattsGrandstream GBX20 backlit LCD extension module with 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