Grandstream Expansion Module for GRP2615,GRP2624,GRP2650,GRP2670,GXV3350,GXV3450
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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
Download full manufacturer specifications, certifications, and drawings.
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