This only has one dmx out. how does this control multiple lights that will be working master mode? i'm using showxpress and new to dmx.

You will set your light to a dmx channel range 1-512. Do not use master mode on your lights as in most cases that dusables the dmx control that you are wanting. The dmx controller is output and your lights should have dmx in and a dmx out to next light. Also, make sure that the lights you have are dmx lights and not master/slave. You should have ether a dip switch or digital display to set the dmx channel. If you do not have ether then you will need a dmx switchpack to control the light with dmx. Hope this is helpful.

How many lights will this control and what is a free software that does not require a license to use it?

It gives one universe of 512 channels. Depending on the number of channels each fixture takes will tell you how many units can be controlled. If you have a dimmer rack with one channel per light then you can control up to 512. If each unit takes up 13 channels you can have 39 fixtures plus a few channels left over. It won't work with Hog or MA but can probably work with the M-PC and other PC lighting consoles. The website has a list of compatible programs. Some of them are free.

Is this compatible with the dmxis software?

This products is compatible with other open sourced pieces of software. Not Compatible with DMXIS, that is a closed sourced interface, and software. DMXIS Interface works with DMXIS software only.

What is the max refresh rate?

Hello, Max output refresh rate is 40FPS² Regards

Open Dmx Usb 70303 Pc Dmx Interface

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Description

🎛️ Unlock pro-level lighting control—your DMX universe awaits!

FULL DMX UNIVERSE CONTROL - Output up to 512 DMX channels through a single XLR5PF port
POWER DIRECTLY FROM YOUR PC - No external power needed—powered entirely via USB
SEAMLESS USB 2 0 INTEGRATION - Plug-and-play USB Type B interface for instant PC connectivity
DEVELOPER FRIENDLY API ACCESS - Customize and innovate with ENTTEC’s OPEN DMX USB API
UNIVERSAL SOFTWARE COMPATIBILITY - Works effortlessly with a wide range of third-party DMX control apps

The OPEN DMX USB 70303 is a compact, USB 2.0 Type B powered interface that outputs a full DMX universe (512 channels) via a single 5-pin XLR port. Designed for seamless PC integration, it supports various third-party software and offers an open API for custom projects, making it an essential tool for lighting professionals and enthusiasts seeking reliable, plug-and-play DMX control.

Specifications

ASIN	B00O9RY664
Amazon Bestseller	#22,174 in Musical Instruments ( See Top 100 in Musical Instruments ) #191 in Computer Recording Audio Interfaces
Customer Reviews	4.3 4.3 out of 5 stars (462)
Date First Available	October 8, 2014
Hardware Interface	Micro USB Type B
Is Discontinued By Manufacturer	No
Item model number	Open DMX USB
Voltage	5 Volts (DC)
Wattage	1.5 W

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