Description
Product Description
The Original HC-04 is a high-stability Bluetooth 2.0+EDR (Enhanced Data Rate) serial communication module designed for industrial-grade wireless data transmission. While it shares many similarities with the HC-06, the HC-04 is specifically engineered with an original chipset that offers superior frequency consistency and lower packet loss in environments with high electromagnetic interference.
This module acts as a “Slave-only” wireless serial bridge. It is designed to be discovered and connected to by “Master” devices such as Android smartphones, tablets, or PCs. Once a connection is established, the HC-04 provides a Transparent Data Pipe; any serial data (TTL) sent to the module’s RX pin is instantly transmitted over the air, appearing at the paired device’s terminal. It is the perfect solution for developers who require a robust, reliable, and “no-configuration” wireless link for their hardware.
Key Features
- Original Industrial Chipset: Features genuine silicon for better long-term reliability and more consistent pairing compared to generic alternatives.
- Plug-and-Play Slave Mode: Pre-configured as a Slave device, making it instantly discoverable by any Bluetooth Master (Phone/PC) without needing initial setup.
- Transparent Serial Link: Requires no knowledge of complex Bluetooth stacks; it functions exactly like a wireless RS232 serial cable.
- Built-in Logic Protection: The 6-pin breakout board includes a power regulator supporting 3.6V to 6.0V, ensuring compatibility with standard 5V and 3.3V power rails.
- High-Speed Response: Optimized for low-latency data transmission, ideal for real-time sensor monitoring and remote control applications.
- Diagnostic LED: The onboard LED indicates pairing status: fast blinking (unpaired/searching) and steady light (paired/connected).
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