The ADJ WiFLY Battery is a battery powered wireless DMX transceiver and after connecting to a DMX Controller users can send a constant and reliable wireless DMX signal up to 500 feet to other ADJ WiFLY products. It has a battery life of up to 20 hours. There are digital battery life and WiFLY wireless signal strength indicators on the side of the unit. It is the ideal solution for event productions, nightclubs, DJs, or for any event where you do not want data cables to be seen, and when it is not easy to run power and data cables to your fixtures location.