Security Interface / 8 Landing

This system was designed to allow up to 8 secured landings when the unit is activated. It disables the landing through a relay that is wired in circuits. When the appropriate code is entered, the relay closes for a predetermined (adjustable) time. It then allows the user to input the floor or floors that he has been given access. An onboard override will de-activate the unit as long as an external input signal is present. An optional time module can activate or de-activate the system at programmable times during the day.