ProFLEX01-R2 & SiFLEX02-HP Transceiver Modules Laird Connectivity ProFLEX01-R2 & SiFLEX02-HP Transceiver Modules each consist of a high performance 2.4GHz or 900MHz IEEE 802.15.4 radio and microcontroller in a cost effective, pre-certified footprint. The ProFLEX01-R2 modules feature the 2.4GHz CC2520 & CC2591 radio and the MSP430F5437A microcontroller, and the SiFLEX02-HP modules feature the 900MHz AT86RF212 & RF amplifier circuit radio and the ATXMEGA256A3 microcontroller. SiFLEX02-HP comes preloaded with the Laird host serial interface running on top of the Atmel 802.15.4 MAC. ProFLEX01-R2 comes preloaded with the TI MAC-Stack that can be used with the Laird host serial interface. Full debug and programming capabilities are included to develop custom applications. Easily load the ZigBee stack or 802.15.4 MAC onto the module to create new networks.