The CC2520EMK is an ad-on development kit for CC2520DK. The full stand-alone development kit is CC2520DK. The CC2520EMK development kit consists of 2 CC2520EM plug in modules and 2 antennas. The CC2520EMK is only usable together with a motherboard/host board, typically the SmartRF05EB and CCMSP-EM430F2618, which are both included in the CC2520DK. The board is also compatible with the MSP430F5438 Experimenter's Board.