The RCM-05 is a small form factor embeddable radio module, designed to be integrated on a custom PCB. The module can be easily surface mounted and requires only a single +3V power supply. It can be used in battery powered devices.
The RCM-05 has a built-in firmware, that can be easily accessed from the accompanying C software library. The library is available for many embedded systems (featuring RTOS), Windows and Linux. The library API is available in C, C++, C#, JAVA and Python.