Waveshare NRF51822 Bluetooth 4.0 Module

The NRF51822 Bluetooth 4.0 Module is a wireless module based on nRF51822 - the Multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC designed for ULP (ultra low power) wirelesss applications. 2.4 GHz multiprotocol RF transceiver; ARM® Cortex™-M0 32 bit processor; 128 bit AES HW encryption; 256kB flash & 32kB RAM; Programmable Peripheral Interconnect (PPI)