Number of entrances - 1
Lock output - Dry contact (C, NO, NC)
Auxiliary output - Open collector
Dial in to open numbers - 250
Divert calls per button - 1 to 5 numbers each
Power supply - 12Vdc
Quad band
Programming methods - SMS or PC
PSU model - 324
Amplifier module - 4810N
Expandable to 50 buttons