All features are programmed directly from the keypad: No need for an external programmer. EEPROM Memory protects programmed information in case of power loss. Up to 50 (01~50) duress codes for output #1, 10 (01~09) for output #2, and 10 (01~09) for output #3. Duress code signals a silent alarm if an authorized user is forced to open the door under duress. Egress input lets users exit the premises without keying in the code. Door sensor input for anti-tailgating operation. Interlocking input for connecting to a second keypad. Keypad active or alarm output selectable via jumper.