Home OpenELAB HC-08 Bluetooth Master Slave Module
OpenELAB HC-08 Bluetooth Master Slave Module-1
OpenELAB HC-08 Bluetooth Master Slave Module-2
OpenELAB HC-08 Bluetooth Master Slave Module-1
OpenELAB HC-08 Bluetooth Master Slave Module-2

OpenELAB HC-08 Bluetooth Master Slave Module

Sale price €13,99

📦 Location of the warehouse: China

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OpenELAB HC-08 Bluetooth Master Slave Module-1

OpenELAB HC-08 Bluetooth Master Slave Module

€13,99

The OpenELAB HC-08 Bluetooth module is a digital transmission module based on the Bluetooth Specification V4.0 BLE protocol.
Its wireless frequency band is 2.4GHz ISM, using GFSK modulation.
The default transmit power is 4dBm, with a receive sensitivity of -93dBm.

This module is compatible with Android and Apple systems. In open environments, it can communicate with iPhone 4s and achieve ultra-long-distance communication up to 80 meters.
It features a status indicator, allowing users to directly see the Bluetooth connection state.

Built on the TI CC2540F256 chip, it comes with 256K bytes of memory and supports AT commands.
Users can change roles (master/slave), adjust baud rate, modify device name, and configure other parameters for flexible use.

 

Features

  • Working voltage: DC 5V

  • Working frequency band: 2.4G

  • Air speed: 1Mbps

  • Communication interface: UART3.3VTTL level

  • Antenna interface: built-in PCB antenna

  • Sleep current: 0.4μA

  • RSSI support: not supported

  • Receive sensitivity: -93dBm@1Mbps

  • Communication level: 3.3V

  • Bluetooth version: V4.0

  • Modulation method: GFSK

  • Transmit power: 4dBm (default)

  • Reference distance: 80m

  • Working temperature: -25℃ to +75℃

  • Working humidity: 10% to 90%

  • Storage temperature: -40℃ to +85℃

  • Working current (excluding LED)

  • Host not connected / connected: 21mA / 9mA

  • Slave MODE0, not connected / connected: 8.5mA/9mA

  • Slave MODE1, not connected / connected: 6μA ~ 2.6mA / 1.6mA

  • Slave MODE2, not connected / connected: 0.4μA/1.6mA

 

HC-08 Pin Definitions

Pin Definition I/O Type Description
1 TXD Output UART output, 3.3V TTL level
2 RXD Input, weak pull-up UART input, 3.3V TTL level
3 NC Not connected
4 NC Not connected
5 NC Not connected
6 DC Input Debug clock
7 DD Input/Output Debug data
8 P2.0 Input, weak pull-up Not connected
9 P1.7 Input, weak pull-down Not connected
10 P1.6 Input, weak pull-down Not connected
11 nRST Input, pull-up Module reset pin, low level ≥10ms for reset
12 VCC Input 3.3V DC power supply, ≥100mA current
13 GND Ground
14 LEDCON Input LED control pin (Note④)
15 P1.4 Input, weak pull-down Not connected
16 P1.3 Output LED output (Note①)
17 P1.1 Output Link indicating (Note②)
18 P1.2 Input, weak pull-down Master module clear memory (Note③)
19 P1.0 Input, weak pull-down Not connected
20 P0.7 Input, weak pull-up Not connected
21 USB_D- Not connected
22 USB_D+ Not connected
23 P0.6 Input, weak pull-up Not connected
24 P0.1 Input, weak pull-up Not connected
25 P0.5 Input, weak pull-down Not connected
26 P0.0 Input, weak pull-up Not connected
27 VCC Input 3.3V DC power supply, ≥100mA current
28 GND Ground
29 RXD Input, weak pull-up UART input, 3.3V TTL level
30 TXD Output UART output, 3.3V TTL level

 

Electrical Characteristics

Parameter Test Condition Representative Value
Working Voltage - DC 2.0V ~ 3.6V
Working Current
(without LED)
Master: Not connected / connection 21mA / 9mA
Slave MODE0: Not connected / connection 8.5mA / 9mA
Slave MODE1: Not connected / connection 6μA ~ 2.6mA / 1.6mA
Slave MODE2: Not connected / connection 0.4μA / 1.6mA

 

Reference schematic

Effective Date: March 27, 2025

At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.

  

1. Warranty Disclaimer

Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.

  

2. Warranty Policy

Warranty Period

The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.

Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.

If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.

After the warranty period, support may still be available at a reasonable fee.

  

Warranty Exclusions

The warranty does not apply in the following cases:

  • The product is beyond the 12-month warranty period.
  • Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
  • Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
  • Unauthorized repair attempts by the customer.
  • The product is not defective but has been opened and is non-returnable by policy.

   

3. Returns & Refunds

If you're not satisfied with your purchase, you may be eligible for a return or exchange:

  • Return for Refund: Within 15 days of receipt (unopened).
  • Return for Replacement: Within 30 days of receipt (damaged or defective).
  • Exchange Window: Up to 30 days from receipt.

Please email us at info@openelab.io for a return authorization before sending anything back.

  

Return Conditions

  • Items must be in original, clean, and mint condition with packaging intact.
  • Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
  • Include the receipt, a brief note with your name, order number, and reason for return.

  

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  • Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
  • Refunds may be subject to additional shipping fees unless the return is due to our error.
  • A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.

   

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