Real-time point status allows the user to see the true state of every point at all times. Sally ports and man traps are easy to program. Readers, inputs, and outputs can be configured in any shape or form to meet special conditions for opening a door. The integrated Echelon communications scheme brings IP connectivity, reliability, high addressability, and inter-panel communications. The MAC-4R is an intelligent distributed processing Access Control panel with programmable ladder logic control functions. Imagine an easy to use Access Control panel, with all the power of a PLC.