Viking E-10A Speakerphone The Viking E-10A Speakerphone with Call Button & Black Aluminum Faceplate is a line powered door entry phone designed to provide two-way handsfree communication. The E-10A can be used with a Viking K-1900-5 or K-1900-30 dialer, or connected directly to a CO line or analog PABX / KSU station when programmed as a ringdown circuit. Features Vandal resistant, black powder painted, aluminum face plate with heavy duty 316 stainless steel call button and mounting gasket Flush mountable using included plastic rough-in box Surface mount with optional VE-5x5 T-10 Torx Security Screws Alternate action call button to place or cancel a call Intelligent call progress detection for automatic hangup on CPC, silence, busy signal, or time out Telephone line powered Two way handsfree communication Programmable maximum call length Includes Atlas 1-Year Warranty with Extended Warranty options available! Documents Viking E10-A DataSheet