To use this power supply conditioner, simply connect it to your power source using the 20A 125V twist - lock power connector. Then connect your devices to the conditioner. Make sure to check the power rating of your devices before connecting to avoid overloading. When not in use, unplug it to save energy. For maintenance, keep it in a dry and cool place. Regularly check the connector for any signs of wear or damage. If you notice any issues, stop using it immediately and seek professional help.