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 Programmable relay activation code 1 2 digits or ** Operates on any 12 24V AC/DC power source LED's for power / relay activation Programmable allow / restrict for dialing from entry phone Programmable allow / restrict for keyless entry from entry phone 32 keyless entry codes Trigger input for contact closure from postal lock, request to exit, etc.