- Viking telephone line powered speaker phone- Provides 2 way hands-free munication- When the “Call” button is pressed will e off-hook and will remain off-hook until a CPC signal is detected the programmed timeout has elapsed a busy signal is detected or the call goes silent making the unit automatically disconnect- Can be directly connectable to a CO line or analog PABX/KSU station when programmed as a ringdown circuit- One or up to four can share an existing phone line in a house or small business when used with a Viking C-200 Entry Phone Controller- Enhanced Weather Protection - rubber gaskets and boots closed cell foam gasketing hand soldered silicon sealed connections anti-corrosive gel filled tip and ring connectors as well as urethane encapsulated circuit boards with internally sealed field-adjustable trim POTS and DIP switches- Alternate action call button to place or cancel a call- Intelligent call progress detection for automatic hang-up on CPC silence busy signal or time out- Telephone line powered- Weather resistant features: mylar speaker gaskets internally sealed push button switch UV stable exterior enamel coated PCB- Optional Enhanced Weather Protection (EWP) available for greater weather resistance- Adjustable microphone and speaker volume- Programmable maximum call length- Selectable auto-answer feature allows remote monitoring- Two way handsfree munication- Programmable VOX (mic/speaker) switching speed- Vandal resistant black powder painted aluminum face plate with heavy duty metal call button and mounting gasket- Flush mountable using included plastic rough-in box part # 259576- Surface mountable with an optional VE-5x5VKE10AEWP