Product features:
The powerful ARM Cortex M3, 512KB programmable Flash, 32KB RAM 
USB 2.0 full speed device (12Mbps)
 built-in onboard PCB antennaIi. 
Application fields:
Low power wireless applications for heavy Internet of things
Smart grids and home lansIndustrial 
instrument wireless data acquisition and control 
AMR (water, electricity and gas) automatic meter reading
building automation, 
alarm and security system.Wireless sensor networks,

CC2538 USB Dongle (ZigBee)