{"product_id":"cr-expand4","title":"4-Port AV Control Expander — Serial, Relay \u0026 Ethernet","description":"\u003cul\u003e\n\u003cli\u003eMAIN COM (RS-232) + 4 extended serial ports — 5 serial connections total\u003c\/li\u003e\n\u003cli\u003eCOM 1–2: RS-232\/RS-485\/RS-422 with hardware flow control\u003c\/li\u003e\n\u003cli\u003eCOM 3–4: RS-232 with hardware flow control\u003c\/li\u003e\n\u003cli\u003eNEXT COM daisy-chain output for cascading multiple expanders\u003c\/li\u003e\n\u003cli\u003e4× relay outputs, normally open (1A 24VDC\/AC)\u003c\/li\u003e\n\u003cli\u003e10\/100M Ethernet with TCP\/UDP — TCP ports 8001–8004 per serial\u003c\/li\u003e\n\u003cli\u003eBuilt-in web server for browser-based configuration\u003c\/li\u003e\n\u003cli\u003eDC 24V\/1A power (24V adapter included) — no PoE\u003c\/li\u003e\n\u003cli\u003eFront panel LEDs: PWR, LAN, 4× relay, MAIN TX\/RX, COM 1–4 TX\/RX\u003c\/li\u003e\n\u003cli\u003eMetal enclosure: 147mm × 130mm × 42mm, 673g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KanexPro","offers":[{"title":"Default Title","offer_id":48188133245167,"sku":"CR-EXPAND4","price":499.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/1308\/4143\/files\/CR-EXPAND4-zoom1.jpg?v=1780608746","url":"https:\/\/store.kanexpro.com\/es\/products\/cr-expand4","provider":"KanexPro Store","version":"1.0","type":"link"}