The MiniMax 3 contains the Door Control Module (DCM) for single door control that can be networked with other MiniMax 3 controllers or Max 3 controllers to expand your system up to a total of 64 doors. The MiniMax 3 backplane not only has the DCM pre-installed, it also contains a power supply for readers as well as for a door strike or magnetic lock (AC or DC). The enclosure dimensions are ideal for applications where the controller is installed at the door (e.g. above the ceiling over the door).LAN/WAN connectivity requires the purchase of LAN/WAN device, part number SEG-1 or SEG-M. Modem connectivity requires the purchase of M3M Modem.Features2000 Users per doorNetwork up to 64 doorsSupports IEI system keypads & readers as well as Wiegand readers2000 Transaction storage per doorFirst-In Auto UnlockEight Time zones per door16 Single Date Holidays per door16 Block Date Holidays per doorError LockoutSupports Adjustable Daylight Savings TimeProgrammable with Hub Manager? Professional Software 7.2 or higherLAN/WAN Connectivity (requires SEG-1 or SEG-M)Serial connection made with USB to 485 converterSpecificationsOperating voltage: 16.5 VAC 40 VA Class 2 transformerCurrent requirements: 100 mA (backplane & 1 module) add 40 mA for each module / MiniMax 3 ? Current requirements: 120 mAFront End Reader: 13.8 VDC 300 mAMain Relay: 12-24 VAC/DC 2 AAlarm Shunt, Door Ajar, Forced Door Outputs: 12-24 VAC/DC, 1 mA eachREX/Door Loop: Dry contact closureDimensions: 11.31? W x 11.29? H x 3.56? DTemperature tolerance: -20F to 130FIndoor use onlyOrder number: 0-205672General InformationName: IEI Secured Door Access Control Panel, Nortek Security & Control LLC, IEICategory: International Electronics Inc, Access Control & Communications, Panels & Software, Access Control PanelsUPC Code: 783950056722Country of origin: Hong Kong. Country of origin is subject to change.