Using this Hitachi TU - Z3A camera control unit is easy. First, connect it to your camera with the correct cables. Then, plug in the provided power supply to power it on. When using, keep it in a dry and cool place to avoid overheating. For maintenance, clean the unit regularly with a soft, dry cloth. Don't use any harsh chemicals. If you encounter any problems, check the power connection first. If the issue persists, contact our customer service.