Using this keyfob remote is a breeze. First, make sure you have a compatible 315MHz RF receiver module (which you'll need to buy separately). Just press one of the two buttons on the keyfob, and it'll send a command to the receiver. Keep in mind that the range can be up to 25 feet, but it depends on whether there's a clear line - of - sight and if there are any obstacles in between. If you have multiple receivers, they'll all respond at the same time. When it comes to maintenance, keep the keyfob in a dry place. If the battery runs out, replace it with a new one of the same type. Don't expose it to extreme temperatures or moisture as this could damage the device.