The MS56SFB is a highly flexible, ultra-low power, cost-effective Bluetooth 5 compliant Bluetooth module based on the IN610. Its powerful Arm® Cortex®-M4F CPU with a core running speed of 64Mhz, in addition it comes with 512kB FLASH program space, 256 KB ROM, 96 KB SRAM and 4 KB eFuse memory. The hardware supports two VDDIOs for individual power control, five Bluetooth devices for simultaneous access, and other powerful supporting resources to provide the perfect solution for Bluetooth connectivity. With built-in PA/LNA, the communication distance is at least 200 meters at 1Mbps.