Description Yealink EXP 20 Expansion Module (Refurbished) Features: 160 x 320 graphical LCD with backlight 20 programmable keys with dual-color LEDs 18 additional keys available (two accessible pages of buttons) Adjustable desk stand Up to 6 modules supported Two or less expansion modules can be powered by host phone When adding more than two expansion modules, an optional 5V/1.2A power supply is required (Yealink PS5V1200US) Compatibility Compatible with Yealink SIP-T27P, SIP-T27G, and SIP-T29G Like New Refurbished 1 Year Warranty 1-866-431-5381
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