HC-02 Bluetooth 2.0 Serial Module (UART)

Description

The HC-02 is an industrial-grade Bluetooth V2.0 serial data transmission module designed for embedded systems requiring simple, reliable wireless connectivity. It operates on the Bluetooth 2.0+EDR protocol, offering a stable and low-power link for serial data bridging between microcontrollers and Bluetooth-enabled hosts like smartphones or computers.

Featuring a straightforward UART (RX/TX) interface, the module abstracts complex RF configuration, allowing developers to treat it as a wireless serial cable. With a wide operating voltage of 3.2V to 6V DC, it integrates seamlessly into both 3.3V and 5V logic environments without additional level shifting. An onboard LED provides clear visual indication of connection status and power.