Using this 8 - Channel NDI Switcher and PTZ Controller is easy. First, connect the device to a power source using the provided correct power supply. Then, connect your PTZ cameras to the appropriate channels. You can start controlling the PTZ cameras and switching channels as needed. When using, make sure the power supply is stable to avoid device malfunctions. For maintenance, keep the device in a dry and clean place. Regularly check the connections to ensure they are secure. If you encounter any problems, check the power supply and connections first.