A 120 Ohm DMX512 Terminator in an XLR connector. Connector: XLR 3 Pin Male. Gold-plated pins on the connector. 3 Pin Plug Terminator is a XLR connector plug with a 120 Ohm resistor inside connected to the data lines.Plug this in at the last unit and the source perceives the cable as endless. Otherwise reflections can be caused in of the cable creating problems that can be very difficult to find. Avoid this by terminating of the cable. The XLR 3Pin 512 Terminator Resistor is a key component in the 512 control system, which is used to terminate the signal chain, avoid signal reflection and interference, and the stability and signal quality of the system.It uses a resistance value of 120 to match the characteristic impedance of 512 and is designed to be built into the XLR 3-pin connector for easy installation and use. In stage lighting, sound systems and other control applications, terminal resistors are a necessary tool to proper system operation and maintain signal quality. (Digital Multiplex) signals are widely used in stage lighting, performance, architectural lighting and other fields of lighting. The DMX512 protocol is used to control various parameters of the lamp, such as brightness, color, position, etc. signal features: Channel control: DMX512 typically allows the control of 512 channels, each channel can control a specific parameter of the lamp (such as brightness, color). Chain connection: Multiple lamps can be connected in series to form a link, simplifying wiring and control. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Silver & Blue Material:Plastic+Metal Package Contents: 1 * XLR 3Pin DMX512 Terminal Resistance Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.