The control panel on the back of the device provides all relevant information, such as brightness, channel along with group, and lamp temperature. In addition, the Godox LED500W has been equipped with a practical knob for adjusting brightness from 10% to 100%. Thanks to the built-in receiver, the panel can be controlled remotely via the RC-A5 remote control (available separately). Moreover, these devices can also be grouped and divided into different channels just as easily. Different parameters can be set for each device, for a group of devices, or for all devices (including power off). This panel can be powered via a mains power adapter (included) or optionally by rechargeable batteries. The device emits light of the highest quality, with no flickering effect. The control panel, equipped with an easy-to-read screen, has been placed on the back of the device. Package contents: Godox LED500W LED panel, original product box.