RF-BM-S01A module is based on Texas Instruments CC2541 SoC. The higher and more stable performances enable the CC2541 module to enter a wide range of applications. RF-BM-S01A is one of the most classic Bluetooth LE4.2 modules.
RF-BM-S01 Bluetooth 4.2 module is based on Texas Instruments CC2540 SoC. This BLE module is aimed at the markets with a USB port need and the low power energy need. The high and stable performances make the module be one of your best choices.