Viking C-250 Entry Door Controller and Router
    Applications:
        - Add an entry phone to your standard home or office phones to provide door communication  
    - Provide commercial or residential security via two-way handsfree communication at the door or gate  
    - Connects in series with a single phone line or to a phone system’s unused line input (loop start trunk input) 
    
    Features:
        - Entry Phone Controller And Call Router  
    - Allows single line telephones or a telephone system to share a phone line with a door entry phone  
    - House phones ring with C.O. line cadence or distinctive ring when the entry phone is calling  
    - Built in five number dialer  
    - Detects busy or ring no answer and goes onto the next number  
    - Built in door strike relay with 1 or 2 digit commands  
    - Detects touch tones as fast as 50 milliseconds  
    - Postal lock input  
    - Produces "Call Waiting” tones if the entry phone is activated when the house phones are already on a call  
    - Compatible with these Viking entry phones:
       - Works with any E Series or K Series of Viking Phones
       - Or use with any analog phone     
    Specifications:
        - Power: 120VAC / 13.8VAC 1.25A, UL listed adapter provided  
    - Dimensions: 133mm x 104mm x 44mm (5.25" x 4.1" x 1.75")  
    - Shipping weight: 0.9kg (2 lbs.)  
    - Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity  
    - Ring Output: 5 REN, capable of ringing (10) 0.5 REN phones  
    - Talk Battery: 32V DC  
    - Relay Contact Rating: 5A @ 30VDC / 250VAC Maximum  
    - Connections: (12) cage clamp screw terminals