The APC220 radio module provides a simple and economic solution to wireless data communications. This APC220 is a highly versatile, low power radio solution that is easy to setup and integrate into any project requiring a wireless RF link. The employment of an embedded high speed microprocessor and high performance IC creates a transparent UART/TTL interface, and eliminates any need for packetizing and data encoding. It is perfect for robotic application which gives you a wireless control. You can connect one of these modules with your MCU through TTL interface. And connect your PC with another APC220 module through a TTL/USB converter.