The MC-MP1501 is an Edge-Capable Intelligent Controller that is Expandable up to Eight Downstream Serial Input/Output Modules or up to 16 MR62e Network Ready Door Controllers (for a Total of 17 Doors/Openings); Easy Installation with Power-Over-Ethernet Plus (PoE+) makes the High Performance Ethernet Ready MC-MP1501 a Top Choice for a Single-Door Controller; (Includes 1 MonitorCast Door Licenses)