



Grandstream
Grandstream Expansion Module for GRP2615,GRP2624,GRP2650,GRP2670,GXV3350,GXV3450
SKU: GS-GBX20-EXTMFR SKU: GBX20
Retail Price$153.07
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GBX20 20 Button Module, 2-pages. 40-lines per module, up to 4 modules
GBX20 20 Button Module, 2-pages. 40-lines per module, up to 4 modules
Official Product Datasheet
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