Using this HID ProxPro proximity reader is easy. First, find a suitable wall location for installation. Make sure the area is clean and dry. Then, mount the reader on the wall following the included instructions. To use it, simply place your proximity card near the reader or use the keypad to enter a code if required. As for maintenance, keep the reader clean by wiping it gently with a soft, dry cloth regularly. Avoid exposing it to extreme temperatures or moisture. If you encounter any issues, check the connections first and refer to the troubleshooting guide that comes with the product.