ALLNET 4duino Wireless Module HC-06 Bluetooth Slave Only (ALL-B-59B37)

Adding wireless connectivity to Arduino or Raspberry Pi projects can be challenging without the right hardware. The ALLNET 4duino Wireless Module HC-06 solves this by providing a simple Bluetooth slave link for serial communication, letting your microcontroller talk to smartphones, tablets, or other Bluetooth masters.

Who is it for

Makers, hobbyists, and developers who need a low-cost, easy-to-use Bluetooth module for short-range wireless projects. It's ideal for remote control, data logging, or wireless sensor applications where a slave-only connection is sufficient.

Main features

• Bluetooth 2.0 + EDR with slave-only operation
• UART serial interface for direct connection to microcontrollers
• Wide operating voltage range: 3.6V to 6V DC
• Integrated PCB antenna with up to 10 meters range
• Configurable via AT commands (default baud rate 9600, PIN 1234)
• LED indicator for connection status

Specifications

• Bluetooth version: 2.0 + EDR
• Operating mode: Slave only
• Communication interface: UART (Serial)
• Operating voltage: 3.6V - 6V DC
• Logic level: 3.3V TTL (5V tolerant RX pin)
• Default baud rate: 9600 bps
• Default pairing PIN: 1234
• Wireless range: Up to 10 meters (Class 2)
• Frequency band: 2.4 GHz ISM Band
• Antenna type: Integrated PCB Antenna
• Chipset: CSR BC417143
• Current consumption (operating): ~30-50 mA
• Current consumption (standby): ~8 mA
• AT command support: Yes
• LED indicator: Yes
• Compatibility: Arduino, Raspberry Pi, Microcontrollers
• Operating temperature: -20°C to +85°C

Tips

When connecting to a 5V system like Arduino Uno, the module's RX pin is 5V tolerant, but the TX pin outputs 3.3V logic. Use a level shifter if your master device requires 5V logic levels. The module is slave-only, so it cannot initiate connections to other Bluetooth devices.