Plantronics

Plantronics APS-11 Electronic Hook Switch Adapter Designed For: Elmer CS290-U, CS410, CS410-U, IP-S400; Plantronics MDA200; CS 510, 520, 540; Save W710, W720, W730, W740, W745; Save Office WO100, WO200, WO300, WO350; Unify Open Stage 40 HFA, 60, 80 Made...