CyberData Clock Kit Flush Mount adapter - Gray White (011106)

Flush Mount Clock Kit – Gray White (RAL 9002)
 

The CyberData Clock Kit Flush Mount adapter is an upgrade to the CyberData V2 and V2 Talk-Back speaker that provides a highly visible clock display. This display can be in 12 or 24 hour format whose time base is either taken from a remote NTP server or it's on-board real-time-clock circuity.
The VoIP Ceiling Speaker, V2 Speaker or Talk-Back Speaker must be purchased separately.