{"product_id":"greenconnect-8-channel-modbus-hub-convert-daisy-chain-to-star-topology","title":"GreenConnect - 8 Channel Modbus Hub - Convert Daisy Chain to Star Topology","description":"\u003c!-- GC-MH8 styled Shopify description. Paste into Description \u003e '\u003c\u003e' Show HTML.\n     Replace the image src below with your Shopify-hosted image URL\n     (Shopify Admin \u003e Content \u003e Files \u003e upload \u003e copy link). --\u003e\n\u003cdiv style=\"font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;\ncolor:#2B3440;line-height:1.6;max-width:860px;margin:0 auto;\"\u003e\n\n  \u003ch2 style=\"color:#0C2C6B;font-size:28px;margin:0 0 4px;line-height:1.15;\"\u003eGC-MH8 — 8-Channel Opto-Isolated Modbus RTU Hub\u003c\/h2\u003e\n  \u003cp style=\"color:#2FA84F;font-weight:bold;letter-spacing:1px;text-transform:uppercase;font-size:13px;margin:0 0 16px;\"\u003eBuilt for Reliability. Designed for Installers.\u003c\/p\u003e\n\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0524\/8984\/6939\/files\/GC-RS485hub-breakout.png?v=1785031557\" alt=\"GC-MH8 8-Channel Modbus Hub - inside view with opto-isolated hub, 5A breaker, push-in terminal blocks and cable glands\" style=\"width:100%;height:auto;border-radius:10px;border:1px solid #E1E8F0;box-shadow:0 2px 10px rgba(12,44,107,0.12);margin:0 0 22px;\"\u003e\n\n  \u003cp style=\"font-size:16px;color:#2B3440;margin:0 0 8px;\"\u003eOne shorted wire shouldn’t take down your entire Modbus network. The \u003cstrong\u003eGC-MH8\u003c\/strong\u003e converts a fragile, daisy-chained RS-485 trunk into \u003cstrong\u003eeight individually opto-isolated branches\u003c\/strong\u003e — so a fault, surge, or miswire on one device stays on that device, and the other seven keep running. It’s the rugged, install-anywhere hub that makes large Modbus RTU networks easier to build, troubleshoot, and trust.\u003c\/p\u003e\n\n  \u003ch4 style=\"color:#0C2C6B;font-size:19px;margin:26px 0 12px;padding-left:12px;border-left:5px solid #2FA84F;line-height:1.2;\"\u003eWhy installers choose the GC-MH8\u003c\/h4\u003e\n  \u003cul style=\"margin:0;padding:0;\"\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eOpto-isolated on every channel.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eOptical isolation on all 8 branches protects your BMS from shorts, surges, ground loops, and wiring faults. Problems stay contained instead of cascading across the network.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eStar topology made simple.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eTurn a daisy chain into a clean 8-branch star — easier to wire and far easier to troubleshoot. Isolate any single branch without hunting the entire loop.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eOne network, one address space.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eAll 8 branches share the same Modbus RTU network, so integration stays simple. No extra gateways, no re-addressing.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eRoom to grow.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eSupports up to 247 Modbus RTU devices across the network (per the Modbus specification).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eIntegrated 5 A circuit breaker.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eBuilt-in overcurrent protection guards the hub and your network — and resets without tools or spare fuses.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003ePush-in DIN-rail terminals.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eFast, vibration-resistant push-in connections. No screw terminals to loosen, back out, or retighten in the field.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eInstalls in minutes.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eDIN-rail or wall-mount enclosure with clearly labeled connections and cable glands. Land your wires, apply power, and get to work.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"list-style:none;margin:0 0 14px;padding:0 0 0 34px;position:relative;\"\u003e\n\u003cspan style=\"position:absolute;left:0;top:1px;display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:50%;background:#2FA84F;color:#fff;font-weight:bold;font-size:13px;\"\u003e✓\u003c\/span\u003e\u003cstrong style=\"color:#0C2C6B;\"\u003eBuilt to last.\u003c\/strong\u003e \u003cspan style=\"color:#2B3440;\"\u003eIndustrial-grade enclosure and components stand up to tough BMS and field environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n  \u003cdiv style=\"background:#F4F7FB;border-left:5px solid #2FA84F;border-radius:8px;padding:14px 18px;margin:24px 0;\"\u003e\n    \u003cspan style=\"color:#0C2C6B;font-weight:bold;font-size:16px;\"\u003e⚡ Power — 24 VDC\u003c\/span\u003e\n    \u003cp style=\"margin:6px 0 0;color:#2B3440;\"\u003eRuns on \u003cstrong\u003e24 VDC\u003c\/strong\u003e with ground. Use a regulated 24 VDC supply and do not exceed 24 VDC — stable power means a stable network.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch4 style=\"color:#0C2C6B;font-size:19px;margin:26px 0 12px;padding-left:12px;border-left:5px solid #2FA84F;line-height:1.2;\"\u003eSpecifications at a glance\u003c\/h4\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #E1E8F0;border-radius:8px;overflow:hidden;font-size:15px;\"\u003e\n\u003ctr style=\"background:#F4F7FB;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eChannels\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003e8 × opto-isolated Modbus RTU branches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eTopology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eDaisy chain → 8-branch star\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F4F7FB;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eNetwork capacity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eUp to 247 devices (per Modbus spec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eIsolation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eOptical, per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F4F7FB;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eOvercurrent protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eIntegrated 5 A circuit breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eTerminals\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003ePush-in, vibration-resistant (no screws)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F4F7FB;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003ePower input\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003e24 VDC regulated, ground required (do not exceed 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eDIN rail or wall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F4F7FB;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eIndustrial-grade with cable glands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#0C2C6B;font-weight:bold;width:38%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #E1E8F0;color:#2B3440;\"\u003eGC-MH8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n  \u003ch4 style=\"color:#0C2C6B;font-size:19px;margin:26px 0 12px;padding-left:12px;border-left:5px solid #2FA84F;line-height:1.2;\"\u003eIdeal for\u003c\/h4\u003e\n  \u003cp style=\"margin:0 0 20px;color:#2B3440;\"\u003eBuilding management systems (BMS), HVAC and VAV controls, building automation, energy management, and any RS-485 Modbus RTU network where reliability matters.\u003c\/p\u003e\n\n  \u003cp style=\"text-align:center;background:#0C2C6B;color:#fff;font-weight:bold;letter-spacing:2px;text-transform:uppercase;padding:12px;border-radius:8px;margin:0;\"\u003e🇺🇸  Assembled in America\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Green Apple Lighting","offers":[{"title":"Default Title","offer_id":49098657333403,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0524\/8984\/6939\/files\/GC-rs485-8ch-nousa.png?v=1785028610","url":"https:\/\/greenappleenergycompany.com\/products\/greenconnect-8-channel-modbus-hub-convert-daisy-chain-to-star-topology","provider":"Green Apple Lighting","version":"1.0","type":"link"}