As an option for the CyberData V2 TalkBack speaker, the V2 Remote Call Button enable calls to the V2 Talkback speaker that can be initiated or answered from a remotely-mounted switch.
Cyberdata Button for V2 TalkBack VoIP Speaker
As an option for the CyberData V2 TalkBack speaker, the V2 Remote Call Button enable calls to the V2 Talkback speaker that can be initiated or answered from a remotely-mounted switch.