Poly VVX EM50 30-key expansion module for the VVX 450 IP phone, adding programmable dual-color LED keys via a 5-inch color display; up to two modules can be attached per phone for 60 extra keys.
HP/Poly
Poly VVX EM50 Expansion Module
MPN: 85X07AA
Prices

ConditionUnit PriceAvailable
New$295.00Yes

Poly VVX EM50 30-key expansion module for the VVX 450 IP phone, adding programmable dual-color LED keys via a 5-inch color display; up to two modules can be attached per phone for 60 extra keys.


Specifications
ConnectionUSB to host phone
Display5.0-inch color LCD, WVGA 480x800
Host CompatibilityPoly VVX 450
Max Modules Per Phone2 (up to 60 extra keys)
Power SourcePowered by host phone (PoE or power adapter)
Programmable Keys30 dual-color (red/green) LED keys