To use this For.A MFR-16RU remote control unit, simply pair it with your compatible device. Since it doesn't come with a power supply, you'll need to provide your own. Note that one button key and two button caps are missing, but don't worry as all the related buttons still work. When handling the remote, be gentle to avoid further damage. For maintenance, keep it clean by using a soft, dry cloth to wipe it regularly. Store it in a cool, dry place when not in use.