Viking 150 Number Apartment Di

Compatible with Viking's vandal resistant K-1700-3, K-1900-8, or any Touch Tone phone
Non-volatile E2 memory (no batteries required)
Remotely or locally programmable
Stores 250 tenant Touch Tone phone numbers and keyless entry codes
Programmable tenant's relay activation code
Programmable master keyless entry code and five maintenance codes
Programmable call timer
Multi-number dialer mode (for Kiosks, etc.)
Ring-thru mode for calling the entry phone
Normally open and normally closed (DPDT) relay contacts for controlling door strikes, magnetic locks, gates, etc.
Auxiliary relay input to trigger a timed relay activation for postal locks, etc.
Touch Tone and pulse dialing toll restriction
Programmable allow/restrict for 911 and 311 outside calls
Log bus data output for logging entry events