BPI Z-wave gateway IoT module use Sigma ZM5304 Z-Wave® Serial Interface Module with Antenna design.
1.Provides connection via Z-Wave serial API interface
2.UART, USB full-speed device connection
3.Firmware upgrade using UART or USB
4.Helical antenna on-board
5.Hardware AES 128 security engine
6.2µA sleep mode
7.9.6/40/100 kbit/s data rates
8.Regional modules for 868/908/921 MHz
9.Hardware-assisted frequency agility with up to 3 channels
10.Battery monitor and built-in supply regulators
more please see wiki page: