{"product_id":"rki-mc-6400-modbus-controller","title":"RKI MC-6400 Modbus Controller","description":"\u003cp\u003eThe RKI MC-6400 is a 64-channel wired Modbus controller that communicates with up to 64 RKI detectors over RS-485, consolidating a large wired gas detection network into one waterproof, chemical- and weather-resistant NEMA-4X enclosure. A 160x104 transflective graphical LCD with LED backlighting shows channel status, and four dry-contact relays (4A fuses) drive alarm and control outputs.\u003c\/p\u003e\n\u003cp\u003ePower comes from a 12-35VDC input as standard, with an optional 85-264VAC to 24VDC supply (6.25A\/150W) for facilities running mixed AC\/DC infrastructure. Rated for -20°F to 158°F operation, the MC-6400 is built for large-scale wired detector networks that need centralized Modbus communication rather than point-by-point wiring back to a control room.\u003c\/p\u003e","brand":"RKI Instruments","offers":[{"title":"64-Channel Modbus","offer_id":48206217216190,"sku":"74-7464-A","price":2107.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/MC-6400-Image.jpg?v=1785119673","url":"https:\/\/envirotechonline.com\/products\/rki-mc-6400-modbus-controller","provider":"EnviroTech Services","version":"1.0","type":"link"}