That is the XBee XB24CZ7WIT-004 module from Digi. That is the up to date version of the Series 2 (XB24-Z7WIT-004) module. It has an up to date firmware which will also be configured as router/endpoint/and so forth. with no need to load a different firmware each time.
Series 2 modules mean you can create complex mesh networks in response to the XBee ZB ZigBee mesh firmware.
These modules allow a very reliable and simple communication between microcontrollers, computers, systems, actually anything with a serial port! Point to point and multi-point networks are supported. These are essentially the similar hardware as the older Series 2, but have up to date firmware. They fully compatible with the Series 2 modules.
New Version – Series 2 C
Does not require constant firmware changes if a different mode/function is required