Valcom V-2006A One Way 6 Zone Page Control with Built In Power<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>One-way all call (one page to all zones)</li><li>Unlimited expansion</li><li>Background music mutes only in zone being paged</li><li>Emergency Page Override for Priority Announcements</li><li>Built-in tone generator for night ring， time clock tone， door bell</li></ul></div><img src="http://ecx.images-amazon.com/images/I/414BLLh1ouL.jpg" noproxy>