{"product_id":"keri-systems-nxt-4d-4-door-nxt-controller-with-keri-firmware","title":"Keri Systems NXT-4D 4-Door NXT Controller with Keri firmware","description":"4-Door Access Control Controller with integrated Ethernet connectivity for modern security networks. Features on-board TCP\/IP networking, eliminating the need for separate adapters and reducing cabling costs by up to 50% compared to traditional hardwired systems. Supports standard CAT5 cabling on existing or dedicated networks.\n\nThe controller delivers intelligent local decision-making with minimal network bandwidth consumption, ideal for bandwidth-conscious environments. Embedded MAC address enables one-button auto-configuration for quick deployment. Expandable via up to four companion 4x4 Input\/Output boards across RS-485 trunks for enhanced system capabilities.\n\nSupports multiple reader types including 4-wire proximity readers with supervision, standard Wiegand output readers, and legacy reader interfaces. Accommodates up to 256 controllers (1024 doors) and 4096 auxiliary I\/O points per network. Stores 50,000 cardholders and maintains a 10,000-event buffer per controller.\n\nBuilt-in tamper input, re-assignable inputs and outputs, and flash memory for firmware updates. Includes standard 4-pin block and RJ jack connectors with quick-disconnect terminals. Housed in optional locking metal enclosure. Managed through intuitive Client\/Server software with familiar interface and advanced functionality for comprehensive access control administration.","brand":"Raztechs","offers":[{"title":"Default Title","offer_id":50099893862677,"sku":null,"price":3066.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/5394\/0757\/files\/7_5586e0d3-a174-4c21-b1ba-9748d09cc020.jpg?v=1786974146","url":"https:\/\/www.raztechs.com\/products\/keri-systems-nxt-4d-4-door-nxt-controller-with-keri-firmware","provider":"Raztechs","version":"1.0","type":"link"}