HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip
HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip - Image 2
HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip - Image 3
HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip - Image 4
SKU: IOWC-0172
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HC-08 Bluetooth 4.0 BLE Serial Module w/ CC2540 Chip

₹619.00 (Inclusive of all taxes)
Out of Stock

The HC-08 is a Bluetooth 4.0 BLE serial port module based on the TI CC2540 chipset, offering a reliable wireless drop-in replacement for wired UART connections with a range up to 80 meters in open space.

Features

  • TI CC2540 BLE 4.0 chipset enables low-power, flexible wireless serial communication.
  • Extended open-space range up to 80 meters with a maximum transmit power of 4dBm.
  • Configurable via AT commands for baud rate, device name, and master/slave roles.
  • Ultra-low sleep mode current of 0.4µA for battery-powered IoT applications.
  • Integrated chip antenna and 3.6-6V wide voltage input simplifies integration.

Out of stock

Description

The HC-08 Bluetooth module implements the Bluetooth Low Energy (BLE) 4.0 protocol using the Texas Instruments CC2540 SoC, providing a robust wireless serial bridge. It operates in the 2.4GHz ISM band with GFSK modulation, achieving a sensitivity of -93dBm for reliable data links. The module is pre-configured for Serial Port Profile (SPP) operation, making it an industrial-grade replacement for wired serial cables.

Designed for flexible integration, the HC-08 supports a wide UART baud rate from 1200 to 115200 bps and is fully configurable via standard AT commands. Its low-power architecture features multiple sleep modes, with a deep sleep current as low as 0.4 microamps, making it ideal for always-on, battery-operated sensor nodes and remote control systems.

Key Features

  • Bluetooth 4.0 BLE protocol with backward compatibility for classic SPP applications.
  • Based on the proven TI CC2540 RF system-on-chip with 256KB of flash memory.
  • Industrial operating temperature range supports deployments from -40°C to +85°C.
  • Integrated chip antenna eliminates the need for external RF matching components.
  • Simple TTL UART interface (RX, TX, VCC, GND) for direct MCU connection.
  • Default pairing PIN '1234' for quick out-of-box testing and prototyping.
  • Supports master/slave role switching dynamically via AT commands.
  • Low voltage operation from 3.6V to 6V, compatible with 3.3V and 5V logic systems.

Applications

  • Wireless serial cable replacement for industrial control and telemetry systems.
  • IoT sensor data logging and transmission to smartphones or gateways.
  • Smart home automation for wireless control of lights, relays, and sensors.
  • Remote control and data acquisition in robotics, drones, and RC models.
  • Asset tracking and beacon applications utilizing BLE connectivity.

Technical Specifications

Bluetooth SoCTI CC2540
Wireless ProtocolBluetooth 4.0 BLE (SPP)
Frequency Range2.4 GHz ISM Band
RF Transmit PowerMax. 4 dBm
RF Sensitivity-93 dBm
Supply Voltage3.6 V ~ 6 V
Sleep Current0.4 µA (Mode 2)
InterfaceUART TTL (RX, TX, VCC, GND)
Antenna ConnectorIntegrated Chip Antenna
Operating Temperature-40°C to +85°C
Dimensions70mm x 30mm

Frequently Asked Questions

How do I configure the HC-08 module's baud rate and device name?

Connect the module's TX/RX pins to a USB-to-serial adapter and use a terminal program at 9600 baud (default). Enter AT command mode by sending 'AT' (should return OK). Use commands like AT+BAUDx to set baud rate (x=1 for 1200, 8 for 115200), AT+NAME to set a custom Bluetooth name, and AT+ROLE to switch between master (1) and slave (0) roles. Always save settings with AT+SAVE.

What is the power supply requirement and how do I achieve the lowest sleep current?

The HC-08 operates from 3.6V to 6V DC. For lowest power consumption, ensure your MCU can control the module's KEY pin. Pull the KEY pin high for >50ms to enter AT command mode, or use specific AT commands (like AT+SLEEP) to configure sleep mode 2. In this deep sleep mode, with the module properly configured and the KEY pin set low, the current can drop to the specified 0.4µA, which is critical for battery-powered sensor nodes.

Can I pair this module with an iPhone or Android device for serial communication?

Yes. The HC-08 supports the Serial Port Profile (SPP) over BLE, compatible with many mobile apps. On your phone, enable Bluetooth, scan for devices (default name is 'HC-08'), and pair using the default PIN '1234'. Use a serial terminal app like 'Serial Bluetooth Terminal' on Android or 'LightBlue' on iOS to establish a connection. Ensure the app is configured for the same baud rate (default 9600) as your module for correct data transmission.

Package Includes

  • 1 x HC-08 Bluetooth 4.0 BLE Serial Port Module

Additional Information

Weight 0.005 kg
Dimensions 7 × 3 cm

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