KCX_EMITER Bluetooth 5.3 Audio Transmitter Receiver Module
KCX_EMITER Bluetooth 5.3 Audio Transmitter Receiver Module
KCX_EMITER Bluetooth 5.3 Audio Transmitter & Receiver Module
Upgrade your wireless audio projects with the KCX_EMITER Bluetooth 5.3 Audio Transmitter/Receiver Module — a compact, high-performance stereo GFSK transceiver designed for seamless integration into DIY electronics, audio devices, wireless speakers, and more. With the latest Bluetooth 5.3 protocol, this versatile module delivers fast, stable connections and exceptional audio fidelity in a tiny 24 × 15 × 3 mm footprint.
Key Features
- Bluetooth 5.3 Technology: Leverages the latest Bluetooth 5.3 protocol for faster, more stable wireless connections with automatic reconnection to previously paired devices.
- Dual-Mode: TX & RX: Configurable as either an audio transmitter or receiver — perfect for streaming audio to Bluetooth headphones, speakers, or any Bluetooth-enabled device.
- High-Quality Stereo Sound: 2-channel (stereo) GFSK transceiver delivers outstanding audio performance with an 80 dB dynamic range, 95 dB signal-to-noise ratio, and a full 20 Hz–20 kHz frequency response.
- AT Command Configuration: Supports AT command control for device naming, connection management, and status indication — making integration into custom and commercial projects straightforward.
- Status LED Indicators: Built-in LED indicators and level output provide clear visual feedback on connection status at a glance.
- Compact Form Factor: Measuring just 23.5 × 15.5 mm (PCB boundary), this module fits into space-constrained designs with ease.
- Wide Operating Voltage: Runs on 3.5–5V, compatible with common microcontroller and development board power supplies.
Technical Specifications
| Model | KCX_EMITER |
| Bluetooth Version | 5.3 |
| Operating Voltage | 3.5 – 5V DC |
| Operating Current | 35 mA |
| RF Output Power | +5 dBm |
| RF Frequency Range | 2402 – 2480 MHz |
| Transmission Distance | Up to 20 meters |
| Transmission Delay | 250 – 300 ms |
| Audio Dynamic Range | 80 dB |
| Total Harmonic Distortion | -70 dB |
| Frequency Response | 20 Hz – 20 kHz |
| Signal-to-Noise Ratio | 95 dB |
| Audio Input/Output Amplitude | ≤ 2 Vpp |
| Channels | 2 (Stereo) |
| PCB Boundary Size | 23.5 × 15.5 mm |
| Product Dimensions | 24 × 15 × 3 mm (0.94 × 0.59 × 0.12 in) |
| Country of Origin | Made in China |
What's in the Box
- 1 × KCX_EMITER Bluetooth 5.3 Transceiver Module
- 1 × Antenna
Ideal Applications
Whether you're building a custom wireless speaker system, retrofitting a wired audio setup, prototyping an IoT device, or working on any DIY electronics project, the KCX_EMITER module provides a reliable, plug-and-play wireless audio solution. Its small size and AT command configurability make it a favorite among hobbyists and engineers alike.
Note: Actual color may vary slightly due to monitor settings and lighting. Please allow ±1–2 cm measurement tolerance.
For more information on Bluetooth wireless technology standards, visit the NIST Wireless Networks Division.
Frequently Asked Questions
Q: Can the KCX_EMITER module work as both a transmitter and a receiver?
A: Yes! The KCX_EMITER Bluetooth 5.3 module can be configured as either an audio transmitter (TX) or audio receiver (RX) mode using AT commands. This makes it highly versatile for a wide range of wireless audio applications.
Q: What is the wireless range of this Bluetooth 5.3 audio module?
A: The KCX_EMITER module supports a transmission distance of up to 20 meters (approximately 65 feet) in open environments, making it suitable for most room-sized audio setups and DIY wireless speaker projects.
Q: Is this module compatible with standard microcontrollers like Arduino?
A: Yes. With an operating voltage of 3.5–5V and AT command support, the KCX_EMITER Bluetooth 5.3 audio transceiver module integrates easily with Arduino, Raspberry Pi, ESP32, and most common microcontroller platforms.
Q: What audio quality can I expect from this stereo GFSK transceiver?
A: The module delivers high-quality stereo audio with a 95 dB signal-to-noise ratio, -70 dB total harmonic distortion, and a full 20 Hz–20 kHz frequency response — ensuring clear, detailed sound for music and audio applications.