Integrated with a resin panel and speaker frame, the PC-648R is the ceiling mount speaker with a metal attached. It features spring clamp mechanism for easy speaker mounting to the ceiling. The input impedance can be easily changed by changing the tap position of the transformer. 
Others products:CCTV,Fire alarm(Cooper,Simplex,Edwards,Notifier)Walkthrough metal detector,turnstile,paging system,PABX,Solar panel,Burglar,Intercom,Xray 
Call 5715693

visit our website - aa2000ph.com