Lighting equipment usually works coupled with a power cable of which requires a power outlet. With the new Varytec VAT series those days are over. All the PARs, LED bars and other light effects are battery powered.
The lights are controlled by either using the supplied remote control or via a DMX classic of which, however, needs at least one socket.
To help you get an impression on the various application possibilities, have a look at this short demo video we made, Enjoy! 🙂