HM-10 Bluetooth 4.0 BLE CC2541 Master/Slave Module for Arduino

The HM-10 Bluetooth 4.0 BLE CC2541 Master Slave Module adds low-energy wireless connectivity to Arduino and IoT projects, providing a compact, power-efficient way to link microcontrollers with iOS and Android smartphones. Powered by the reliable CC2541 chip, the module uses Bluetooth Low Energy (BLE) 4.0 and can be set to Master and Slave modes so your device can initiate connections or wait for peers, useful for remote robots, wireless sensor networks, and smart home devices. Setup and tuning are handled via a simple serial interface using AT commands to adjust baud rate, password, and role, making integration straightforward for makers who need practical, low-power BLE communication without extra complexity.