MDBT40-256RV3 MODULE BLUETOOTH BT4.2 nRF51822 SOC CHIP ANTEN 32K The MDBT40-256RV3 is a high-quality product offering MODULE BLUETOOTH BT4.2 nRF51822 SOC CHIP ANTEN 32K. With a shrink ratio of N/A and -40°C~+105°C operating temperature, it provides reliability in various applications.