Gm Lighting DMX-TR-5 DMX Terminator Resistor 120 Ohm, 1/4 Watt, 5 Pack
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About this item
About this item
- Signal Stabilization: This 120-Ohm resistor pack effectively eliminates destructive data reflections by cleanly absorbing the end-of-line digital signal in complex DMX512 networks.
- Impedance Matching: Designed with a precise 120-Ohm resistance rating to flawlessly match the characteristic impedance of standard DMX data cabling and prevent communication errors.
- Power Handling: Features a robust 1/4-Watt (0.25W) power rating that safely and efficiently handles standard low-voltage DMX data transmission signals without overheating.
- Flexible Integration: Engineered with a standard axial lead configuration that allows for direct soldering into 3-pin or 5-pin XLR connectors or clean integration into architectural terminal blocks.
- Multi-Run Convenience: Provided as a convenient 5-piece pack to keep commercial installation toolboxes stocked for multi-universe projects or complex, multi-run task lighting layouts.
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Description
Description
The DMX-TR-5 is a professional-grade DMX terminator resistor pack engineered to maintain total data integrity across architectural, task, and under-cabinet lighting control networks. In long cable runs or complex multi-fixture daisy chains, digital control signals can bounce off the end of the line, creating signal echoes that lead to destructive data collisions. This high-performance hardware solution absorbs those signals at the end of the run, mimicking an infinitely long cable and stabilizing the entire universe. By suppressing electrical noise, it prevents erratic fixture behaviors such as random strobing, flickering, ghosting, or lost communication packets.
Built to strict commercial standards, each resistor features a 120-Ohm resistance value to precisely match the characteristic impedance of standard DMX512 cabling. The 1/4-Watt power rating ensures safe, reliable operation within low-voltage data lines. Featuring durable axial leads, these resistors are ideal for soldering directly across Pin 2 (Data -) and Pin 3 (Data +) inside standard 3-pin or 5-pin XLR connectors, or for securing directly into architectural terminal blocks. The five-piece configuration provides electrical contractors and system integrators with an essential stock of components for multi-run commercial layouts, balancing high-end data stability with efficient field installation.
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Frequently Asked Questions
Why does a DMX-TR-5 terminator pack require a 120-Ohm resistance rating?
Why does a DMX-TR-5 terminator pack require a 120-Ohm resistance rating?
The 120-Ohm resistance value is specifically engineered to match the characteristic impedance of standard DMX512 data cables. This precise matching prevents digital signals from bouncing back up the control line, ensuring total data integrity across the network.
How do you install the DMX-TR-5 resistor in a standard 3-pin or 5-pin XLR connector?
How do you install the DMX-TR-5 resistor in a standard 3-pin or 5-pin XLR connector?
To install the terminator, solder the two axial leads of a single resistor directly across Pin 2 (Data -) and Pin 3 (Data +) inside the male XLR connector, then plug that connector into the DMX output port of the final fixture in the daisy chain.
Can I use a 1/4-Watt resistor for high-voltage architectural power lines?
Can I use a 1/4-Watt resistor for high-voltage architectural power lines?
No. The 1/4-Watt (0.25W) power rating is strictly designed to handle low-voltage, low-current digital data signals running through DMX512 control lines. It must never be connected to line-voltage power source wires.
What are the common symptoms of a DMX control line missing a terminator?
What are the common symptoms of a DMX control line missing a terminator?
Without a terminator, data reflections can cause random fixture flickering, intermittent strobing, delayed response times to controller commands, or complete communication dropouts, especially on linear runs exceeding 100 feet.
Do I need to install a DMX-TR-5 resistor at the end of every fixture run?
Do I need to install a DMX-TR-5 resistor at the end of every fixture run?
You only need to install one resistor at the absolute end of each independent DMX daisy chain or universe. It must be placed in the open DMX output port of the very last fixture or decoder in that specific serial run.

