User guide for Wavesen HC series Bluetooth modules covering overview, selection, pinout, AT commands and first‑time use.
This manual introduces the HC series Bluetooth products, which include both Bluetooth serial modules (HC‑03, HC‑04, HC‑05, HC‑06) and Bluetooth adapters (HC‑M4, HC‑M6). It explains the distinction between master and slave roles, naming conventions, and typical applications such as replacing a serial cable between microcontrollers or connecting to computers and smartphones.
The document provides detailed hardware information (package size 28 mm × 15 mm × 2.35 mm, pin definitions, power consumption), step‑by‑step wiring diagrams, AT‑command usage, pairing procedures, and ordering details. It also lists reference materials and software tools available from the Wavesen website. This manual is written in Chinese.
| Package size | 28 mm × 15 mm × 2.35 mm |
|---|---|
| Operating voltage | 3.1 V – 4.2 V (typical 3.3 V) |
| Default baud rate | 9600 bps |
| Power consumption (pairing) | 30 – 40 mA |
| Default pairing password | 1234 |
Set pin 34 high while powering on the module; the module will enter AT mode and use the same baud rate as normal communication.
The default password is 1234.
The modules communicate at 9600 bps by default.