This is a really easy to use DMX tester. It is designed to do the three things you need the most out of a DMX tester: Send signal, receive signal, and test cable. You can enter a single address or multiple addresses and give them all a single level or give them all different levels. One single button to clear all addresses back to zero level. The tester has a "dimmer check" mode that allows you to bring up an address at a level and then push that level to the next address with one button press. Receive mode will show the level of whatever address that you type on the keypad. The display will indicate if there is no valid signal present. Cable test mode will show you that you have continuity on all 5 pins of a standard DMX cable. The screen will display the pin to pin connection in case some of the pins are wired incorrectly or shorted together. The DXT-1 also has a new feature where you can choose to display the DMX value as a percentage (0 to 100%) or as the full DMX value (0 to 255). The screen will alert you if RDM packets are present on your DMX line. Made in the USA. From NuDelta Digital, makers of the LogiCue Digital Cue Light System.