Pknight RDMX-S8FA 8-Port DMX RDM Splitter with Dual A/B Input Switching, Optical Isolation, Front & Rear DMX Inputs, 1U Rack Mount Signal Distributor for Stage Lighting, DJ, Touring & Live Events

Point Description： 1.Dual A/B Input With Per-Output Switching : Connect two independent DMX controllers to Input A and Input B, then assign each of the 8 outputs to either source individually. Ideal for main/backup console switching, dual-console workflows, and multi-zone stage lighting control without extra patching. 8 Optically Isolated Outputs for Stable Signal : Every output is optically isolated to reduce ground loops, block electrical interference, and help maintain clean DMX transmission across connected fixtures in demanding live environments. RDM On/Off Control with Built-In Fuse Protection : Enable RDM when you need remote fixture addressing, monitoring, and configuration, or switch it off for pure DMX512 transmission. The built-in T1.0A/250V fuse adds extra protection against power faults during operation. Flexible Front and Rear DMX Inputs : Front and rear DMX input access makes installation easier in 19-inch racks, truss systems, touring cases, and fixed venues. Route cables from the most convenient side to keep setups cleaner and faster. Professional 1U Rack-Mount Design with LED Status Indicators : The compact 1U chassis fits standard equipment racks and features clear per-channel LED indicators, so you can quickly verify signal routing, A/B status, and system activity during setup or live shows Overview Professional DMX Signal Distribution with Dual-Source A/B Routing The Pknight RDMX-S8FA is a professional-grade 2-in 8-out DMX splitter built for stage lighting, live events, touring productions, and permanent installations. It features dual DMX512 inputs (A and B) with per-output A/B switching — each of the 8 outputs can be independently assigned to either input source, enabling flexible signal routing, instant controller failover, and reliable backup configurations during live broadcasts, touring shows, and mission-critical events. Front and rear 3-pin XLR input ports simplify cable management in 19" rack and truss-mounted setups. The dedicated RDM ON/OFF switch gives you full control over RDM pass-through, while opto-isolated outputs protect every connected fixture from ground loops and electrical interference. Built-in fuse protection adds an extra layer of safety against power surges. Q&A Q1: Does this splitter merge or combine DMX signals from two controllers? A: No — it does not merge signals. Input A and Input B are two independent DMX sources. Each output can be individually assigned to either one, making it ideal for A/B switching, backup failover, or multi-zone control. Q2: Can I set up a main and backup controller with this unit? A: Yes. Connect your primary console to Input A and your backup to Input B. If the main console fails, simply flip the A/B switch on each output — no cable swapping, no downtime during a live show. Q3: Why are there DMX inputs on both the front and rear panels? A: Both sides connect to the same A/B input pair. Dual-side ports allow flexible cable routing in rack-mounted or truss-mounted setups. You can connect from whichever side gives you a cleaner cable path, saving setup time and reducing clutter. Q4: Does it support RDM? Can I disable it? A: Yes. The dedicated RDM ON/OFF switch lets you enable RDM for remote fixture addressing and configuration, or disable it to ensure pure DMX512 signal stability in systems where RDM causes compatibility issues. Q5: What does opto-isolation do and why does it matter? A: Opto-isolation separates each output from the input and others, preventing ground loops, reducing noise, and protecting your fixtures and console—ensuring reliable performance in complex lighting setups. Q6: What type of connectors does it use? A: All inputs and outputs use industry-standard 3-pin XLR connectors, compatible with the vast majority of DMX lighting fixtures, controllers, and accessories. No adapters needed for most professional setups.