Not sure what this is but the battery is working and powers up it appears that the AC DC power input is missing but it's standard easy to replace or use one you already have
Below ai description
The American DJ WiFLY EXR is a battery-powered wireless DMX transceiver that allows you to control your stage lighting wirelessly. With a range of up to 2,500 feet, this Wi-Fi DMX transceiver can control up to 512 channels. The American DJ WIF013 model is designed for easy connectivity and control of your DMX lighting system.