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HC 08 4 pin Bluetooth Module without Reset Switch
The HC-08 BLE module operates using Bluetooth 4.0 protocol and supports UART serial communication, providing an easy wireless link between an MCU (like Arduino, STM32, or ESP32) and a smartphone, tablet, or PC. It features a BLE (Bluetooth Low Energy) interface, which significantly reduces power consumption while maintaining stable, reliable communication — ideal for battery-powered devices.
Compared to older modules like the HC-05 and HC-06, the HC-08 offers higher data efficiency, lower latency, and improved range under BLE mode. It functions as a slave device, enabling seamless pairing with smartphones and computers that support BLE.
Its onboard PCB antenna ensures excellent wireless performance, while the absence of a baseplate keeps the size and power requirements minimal — suitable for direct soldering into embedded designs.
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Features:-
- Based on TI CC2540 chipset
- Bluetooth class 2
- Industrial level SPP Bluetooth module
- Integrated chip antenna
- Industrial temperature range from -40 to +85
- Support for on-board applications
- Modulation method: GFSK
- Transfer rate: Asynchronous: 6 KBPS Synchronous: KBPS
specifications:-
| Frequency | 2.4GHz ISM. |
| Protocol | BLE 4.0. |
| Bluetooth Version | 4.0 |
| Power supply | 3.6 V~ 6V |
| Max transmitting power | Max. 4dBm. |
| Modulation System | GFSK. |
| Serial Baud Rate | 1200 to 115200 bps. |
| Reference Distance | 80 meters. |
| Speed | 1Mbps (Max). |
| Sleep Mode Current | 0.4uA (MODE 2). |
| Communication Port | UART 3.3V TTL. |
| Working temperature | -20 ~ +75C. |
| Length (mm) | 70 |
| Width (mm) | 30 |
| Height (mm) | 10 |
| Weight (gm) | 5 |
Applications
- Wireless communication for Arduino and microcontroller projects
- Bluetooth-controlled robots and home automation systems
- IoT sensors and BLE-enabled devices
- Remote control and data logging applications
- Smart wearable devices and low-power electronics
*Product image for illustration purposes only, actual product may vary.
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