Description
FEATURES
• Compatibility: GRP2615, GXV3350
• Daisy-chain 4 modules for up to 160 programmable buttons
• 1 Unit powered by Phone, additional units require power supply
• 4.3 inch colour display
WHAT’S INCLUDED
• 1 x Grandstream GBX20 20 Key Expansion Module
• Connection cable
• User Guide
