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Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
HC-06 4pin Bluetooth Module (Slave) No Button

HC-06 4pin Bluetooth Module (Slave) No Button

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ComponentSpecification
ModelHC-06 (Slave Mode Only)
Bluetooth VersionV2.0 + EDR (CSR BC04 Chip)
Operating Voltage3.6V to 6V DC (On-board 3.3V Regulator)
Operating Current30-40mA (Pairing), 8-10mA (Connected)
Baud RateDefault 9600 bps (Configurable via AT)
Range~10 Meters (Class 2 Power Level)
InterfaceUART (VCC, GND, TXD, RXD)
Dimensions27mm x 13mm x 2.2mm
Price
₹ 376.19 ₹ 376.19
(Tax included)

Barcode: 32791164

Product Description The HC-06 4-pin Bluetooth Module is a widely popular wireless serial communication module designed for seamless UART data exchange. This specific version is a Slave-only module, meaning it can be discovered and paired with Master devices like smartphones, laptops, or HC-05 Master modules, but cannot initiate connections itself. It features an integrated 3.3V regulator and clear breakout pins (VCC, GND, TX, RX), making it plug-and-play compatible with 5V microcontrollers like Arduino. Whether you are building a remote-controlled robot or a wireless data logger, the HC-06 provides a reliable, cost-effective link for your project.

Key Features

  • Plug-and-Play UART: Once paired, it functions like a standard wired serial connection, requiring no complex Bluetooth protocol handling.

  • AT Command Configurable: Easily customize the Module Name, Pairing Password, and Baud Rate using simple AT commands when unpaired.

  • On-board Regulator: Accepts a wide input voltage range (3.6V - 6V), allowing direct powering from Arduino 5V pins.

  • Compact Form Factor: The slim 4-pin design without a button is ideal for permanent installations in tight enclosures.

  • Status Indicator LED: Provides immediate visual feedback for pairing status (flashing for searching, steady for connected).


Technical Details

  • Core Chipset: Based on the CSR BC04 Bluetooth technology with a built-in 2.4GHz PCB antenna.

  • Bluetooth Class: Class 2 power level, tested for a reliable range of up to 10 meters in open areas.

  • Communication Mode: Standard 8 data bits, 1 stop bit, and no parity; compatible with almost all terminal software.

  • Frequency Band: Operates on the 2.4GHz ISM band (Industrial, Scientific, and Medical).

  • Modulation: GFSK (Gaussian Frequency Shift Keying).

  • Sensitivity: Better than -80dBm for robust data reception even at moderate distances.

  • Operating Temperature: Industrial grade performance from -25°C to +75°C.

  • Logic Level: UART pins (TX/RX) operate at 3.3V logic; use a voltage divider for the RX pin when interfacing with 5V MCUs.

  • Pairing Pin: Default pairing code is typically "1234" or "0000".

  • Power Protection: Input voltage must never exceed 7V to prevent damage to the internal regulator.

  • Interference: High-quality GFSK modulation provides stable communication even in environments with other 2.4GHz signals.

  • UART Buffer: Built-in buffer handles data efficiently to prevent packet loss during wireless transmission.

  • Antenna: High-gain PCB trace antenna integrated directly on the module for a small footprint.

  • Configuration State: Enters AT mode automatically when not connected to a master device.

  • Compatibility: Works seamlessly with Android Bluetooth Terminal apps and PC-based serial monitors.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: Do not connect a 9V battery directly to the VCC pin; always use a 5V regulator (like LM7805) or the 5V output from your Arduino to power the module.

  • 18650 Cell: A single 18650 cell (3.7V - 4.2V) is a perfect power source for this module, as it falls within the 3.6V - 6V input range.

  • Voltage Divider: Since the HC-06 RX pin is 3.3V logic, we suggest using a 1k and 2k resistor divider between the Arduino TX and HC-06 RX to ensure long-term stability.

  • Related Products: Pair this with our Half-Size Breadboards, Arduino Uno R3, and Jumper Wire Packs for a complete wireless setup.

Package Includes

  • 1 x HC-06 4pin Bluetooth Module (Slave) No Button.

Disclaimer Image is for illustration purpose only. Ensure proper logic level shifting on the RX pin to avoid permanent damage to the module’s microcontroller.