Backlit, Large Character LCD Display: 16 x 2 lines, Built-in Temperature Sensor, Optional Plug-in Prox Access reader (26 bit Weigand format), Menu navigation keys and 6 programmable function keys, Plug-in connector: Only 4 wires to the control, 1 Zone Input and 1 Output Programmable per Keypad, Programmable display of time, date and temperature, Displays system diagnostics and settings.