- Viking Secure Touch Tone Relay Controller- Secure control of high security building entry systems- Door strikes and gates in conjunction with door boxes (W-1000, etc.), entry phones (E-10A, E-20B, E-30, E-40, E-50, K-1700-3, etc.) or hot-line/panel phones (K-1500-7, K-1900-7, etc)- User touch tone programmable- Non-volatile memory - retains programming during power outage- 6 digit programmable security code (to access programming)- Switchable 32V talk battery- Programmable relay activation time- Programma