DESC: Viking VK-PA-2A Paging/Loud Ringer Description : Viking Paging/Loud Ringer PA-2A Provides loud electronic ring for night bell, warehouses, etc. The PA-2A monitors up to 6 C.O. lines for ring or can be activated by a key system dry contact closure. Connect to unused trunk line input or paging port on Electronic or 1A2 Key or "No KSU" phones for 2 watts of paging power (enough to drive 3 paging horns). The PA-2A can also provide background music Weather-proof paging horn incl. This item is brand new, not refurbished, and comes with all manufacturer supplied accessories, and full manufacturer's warranty