Ebyte EWM104-BT3095 QCC3095 BLE 5.4 Wireless Audio Module 200m

The Ebyte EWM104-BT3095 is a high-performance Bluetooth Low Energy 5.4 audio transmission module powered by the Qualcomm QCC3095 SoC, delivering long-range wireless communication up to 200 meters, versatile DAC/I2S/SPDIF audio outputs, UART interfaces, integrated Class-AB and Class-D headphone drivers, and advanced power management for industrial and commercial wireless audio systems. Specifications EWM104‑BT3095 Chip Model QCC3095 bluetooth Version V5.4 Module Dimensions 13*18mm Supply Voltage 3.0~4.3V@VBAT Transmitting Power 8dBm Communication Range 200m (Connect phone in an open area) Communication Interface UART Antenna Interface Stamp hole Stereo Support DSP 240MHz Qualcomm Kalimba™ Audio DSP Aptx Support AptX‑HD Support Aptx‑Adaptive License Required Aptx‑LL License Required ANC (Active Noise Cancellation ) License Required CVC (Echo Cancellation) License Required Key Features Qualcomm QCC3095 System-on-Chip Architecture: Combines on-chip Bluetooth, advanced audio codec, and a programmable application processor for single-chip audio streaming and system management. Triple-Format Audio Interface Versatility: Supports analog DAC, digital I2S, and SPDIF outputs alongside built-in Class-AB and Class-D drivers to drive external speakers or DAC ICs directly. Long-Range 200m BLE 5.4 Connectivity: Offers reliable Bluetooth 5.4 transmission up to 200 meters in line-of-sight environments for wide-area audio distribution. Ultra-Compact SMD Form Factor: Measures 13 x 18 mm and weighs 1.0g +/- 0.1g, enabling seamless surface-mount integration into space-constrained hardware boards. Selection Warning: Verify host MCU interface requirements (UART/I2C), target audio output format (Analog DAC vs. Digital I2S/SPDIF), Bluetooth protocol version, and line-of-sight range requirements prior to hardware design. Model Main Chipset Bluetooth Version Max Distance Audio Outputs Control Interface Dimensions EWM104-BT3095 Qualcomm QCC3095 BLE 5.4 200 m DAC / I2S / SPDIF UART 13 x 18 mm EWM104-BT5125 Qualcomm QCC5125 BLE 5.1 100 m I2S / Analog DAC UART 13 x 18 mm EWM104-BT3008 Qualcomm QCC3008 BLE 5.0 50 m Analog DAC / I2S UART 13 x 18 mm Industrial Installation & Wiring The EWM104-BT3095 features a castellated SMD stamp-hole package suitable for automated SMT pick-and-place assembly. Connect VCC (regulated power source) and GND pins, interface the UART TX/RX lines directly to the host MCU for AT command configuration, and route the DAC, I2S, or SPDIF signals to downstream audio amplifiers or codec processing boards. Pin No. Pin Name Power Pin Direction Pin Description 1 GND - GND Ground 2 PIO21 VDD_PADS I/O Programmable I/O pin 21; when IO21 is high, SPDIF output is selected. Other functions: PCM_DOUT2 3 PIO20 VDD_PADS I/O Power amplifier enable pin, programmable I/O pin 20 4 PIO19 VDD_PADS I/O Programmable I/O pin 19, other functions: PCM_DIN0 5 PCM_DOUT0 VDD_PADS I/O Programmable I/O Port 18, connected to I2S_DIN or SPDIF_OUT 6 PCM_SYNC VDD_PADS I/O Programmable I/O Port 17, connected to I2S_LRCK 7 PCM_CLK VDD_PADS I/O Programmable I/O Port 16, connected to I2S_BCK 8 PCM_MCLK VDD_PADS I/O Programmable I/O Port 15, connected to I2S_MCK 9 USB_DN - I/O USB Data Negative Pin 10 USB_DP - I/O USB Data Positive Pin 11 SYS_CTRL VBAT I After maintaining a high level for 6 seconds, switch to a low level to power on or off; the device will automatically enter pairing mode 12 VBAT VBAT I Battery Connector, Battery Voltage Input: 3.0‑4.3 V 13 CHG_EXT VCHG I External Charging Control, External Charging Transistor Current Control 14 VCHG VCHG I Charging Connector, Battery Charging Input: 4.0 V‑5.5 V 15 LED3 - I/O Analog/Digital Input, Open‑Drain LED Output 16 LED2 - I/O Analog/Digital Input, Open‑Drain LED Output, flashes when paired 17 GND - GND Ground 18 LED1 - I/O Analog/Digital Input, Open‑Drain LED Output 19 LED0 - I/O Analog/Digital Input, Open‑Drain LED Output 20 PIO7 VDD_PADS I/O Programmable I/O Port 7, UART_RX 21 PIO4 VDD_PADS I/O Button PIO[4]: Short press to play/pause 22 PIO3 VDD_PADS I/O Button PIO[3]: Short press to increase volume; long press to continuously increase volume; double‑click to skip to the next track 23 PIO6 VDD_PADS I/O Programmable I/O Port 6: UART_TX 24 PIO5 VDD_PADS I/O Button PIO[5]: Short press to reconnect; long press for 3 seconds to disconnect; 6 seconds to enter pairing mode; 8 seconds to clear the playlist 25 PIO8 VDD_PADS I/O Programmable I/O Port 8; when IO8 is set high, select DAC output 26 PIO2 VDD_PADS I/O Button PIO[2]: Short press to decrease volume; long press to continuously decrease volume; double‑click to skip to the previous track 27 RESET#/PIO1 VDD_PADS I/O Press the PIO[1] module reset button to reset 28 GND - GND Ground 29 VDD_PADS - PWR PIO Power Input, 1.8 V/3.3 V PIO Power Supply 30 1V8_SMPS - PWR_OUT Power Output, 1.8 V Power Output 31 SPKR_N - O Speaker Differential Output—Right Channel Negative 32 SPKR_P - O Speaker Differential Output—Right Channel Positive 33 SPKL_N - O Speaker Differential Output—Left Channel Negative 34 SPKL_P - O Speaker Differential Output—Left Channel Positive 35 MIC_BIAS - O Analog Output, Microphone Bias Output 36 MIC1_N - I Analog Input, Microphone Differential Input 1 Negative 37 MIC1_P - I Analog Input, Microphone Differential Input 1 (Positive) 38 MIC2_N - I Analog Input, Microphone Differential Input 2 (Negative) 39 MIC2_P - I Analog Input, Microphone Differential Input 2 (Positive) 40 MIC3_N - I Analog Input, Microphone Differential Input 3 (Negative) 41 MIC3_P - I Analog Input, Microphone Differential Input 3 (Positive) 42 MIC4_N - I Analog Input, Microphone Differential Input 4 (Negative) 43 MIC4_P - I Analog Input, Microphone Differential Input 4 (Positive) 44 GND - GND Ground 45 GND - GND Ground 46 RF_PORT - O External Antenna 47 GND - GND Ground 48 PIO39 VDD_PADS I/O Programmable I/O Pin 39, Other Functions: QSPI2_IO3 49 PIO38 VDD_PADS I/O Programmable I/O Pin 38, Other Functions: QSPI2_CS# 50 PIO37 VDD_PADS I/O Programmable I/O Pin 37, Other Functions: QSPI2_IO1 51 PIO36 VDD_PADS I/O Programmable I/O pin 36; when IO36 is high, it serves as a USB input; when low, it serves as an AUX input; other functions: QSPI2_IO2 52 PIO35 VDD_PADS I/O Programmable I/O pin 35; other functions: QSPI2_CLK 53 PIO34 VDD_PADS I/O Programmable I/O Pin 34, Other Functions: QSPI2_IO0 54 PIO22 VDD_PADS I/O Programmable I/O Pin 22, Other Functions: PCM_DIN1 No. Definition Function Description 1 USB_IN 5V power supply from the backplane; connects to the USB port on the EWM104‑BT3095 2 Battery Connector Battery input port; connects to the VBAT pin on the EWM104‑BT3095 3 Power Switch Backplane power switch: slide to ON to turn on the power, slide to OFF to turn off the power 4 Chassis Power Supply Selection Switch Switch the power supply method for the resources on the base board: slide the switch to "5V" to power the base board resources via USB, or slide it to "BAT" to power them via battery 5 KEY_SYS_CTRL Default: Module power on/off control; user‑programmable 6 KEY_RESET Module reset control button: Press to reset 7 KEY_PIO2 By default: Short press to decrease volume; long press to continuously decrease volume; double‑tap to skip to the previous track 8 KEY_PIO3 By default: Short press to increase volume; long press to continuously increase volume; double‑tap to skip to the next track 9 KEY_PIO4 By default: Short press to play/pause 10 KEY_PIO5 By default: Short press to reconnect; long press for 3 seconds to disconnect; long press for 6 seconds to enter pairing mode; long press for 8 seconds to clear the playlist 11 I/O Voltage Switch Used to switch the supply voltage for the module's VDD_PADS and on‑board digital I/O; set to 3.3V to supply 3.3V, and set to 1.8V to supply 1.8V 12 Module Power Supply Jumper Used to measure the module's operating current 13 1.27mm Pitch Female Connector Strip EWT104‑QC02Z Installation Location 14 MIC_L Left‑channel microphone 15 AUX_IN AUX audio input port, compatible with 3.5mm three‑pin plugs, featuring insertion detection and path switching. When a 3.5mm three‑pin plug is inserted, the microphone power is disconnected, and the module's audio input channel switches to AUX_IN. When the 3.5mm three‑pin plug is removed, the microphone power is restored, and the module's audio input channel switches back to the microphone 16 MIC_R Right‑channel microphone 17 Stereo Headphone Amplifier Stereo headphone amplifier; input connects to the module's AUX output, and output connects to the AUX_OUT port 18 AUX_OUT AUX_OUT port, compatible with 3.5mm three‑pin and four‑pin plugs, with path switching: when no 3.5mm plug is inserted, the audio signal is output to the 3W stereo amplifier; when a three‑pin 3.5mm plug is inserted, the audio signal is output to the AUX_OUT port 19 3W Stereo Power Amplifier A stereo amplifier with 3W output power; the input is connected to a stereo headphone amplifier and a stereo audio DAC, and the output is connected to the left and right speaker terminals 20 OUT_L Left Channel Speaker Connector 21 OUT_R Right Channel Speaker Connector 22 Stereo Audio DAC Stereo audio DAC with I2S interface; the input connects to the module's I2S interface, and the output connects to the I2S_OUT 23 I2S_OUT AUX_OUT connector, compatible with 3.5mm three‑pin and four‑pin plugs, with path switching; when no 3.5mm plug is inserted, the audio signal is output to the 3W stereo amplifier; when a three‑pin 3.5mm plug is inserted, the audio signal is output to the I2S_OUT connector 24 SPDIF_IN Optical audio input connector 25 SPDIF_OUT Optical Audio Output Port Real-World Application Scenarios 1. Industrial Public Broadcasting and Wireless PA Terminals In large manufacturing factories and industrial parks, deploying wired audio cabling across extensive production workshops and assembly lines leads to high construction and maintenance costs. Built for industrial wireless audio transmission, the EWM104-BT3095 Bluetooth audio module features a 200-meter long-distance transmission capability based on the BLE 5.4 protocol. Embedded into local wireless broadcast receivers, the module stably receives high-fidelity audio streams from central control hosts and outputs standard I2S or SPDIF digital audio signals to drive high-power industrial amplifiers, realizing reliable long-range industrial public audio broadcasting. 2. Smart Factory Voice Prompt and Audio-Visual Alarm System Modern industrial automation requires real-time voice reminders and safety early warnings for hazardous working areas. When integrated with Ebyte industrial DTU controllers and deployed on factory alarm nodes, the EWM104-BT3095 supports UART command interaction with industrial hosts. With the built-in Class-D audio driver, the module triggers instant dynamic voice broadcasting, achieving low-latency audio alarm prompts and improving overall factory safety response efficiency. 3. Commercial Wireless Headphones and Audio Guide Receiving Terminals Commercial wireless headsets and tour guide audio terminals demand lightweight design, low power consumption and clear audio performance. Featuring a compact 13×18mm ultra-small form factor and integrated Class-AB headphone driver, the EWM104-BT3095 eliminates the need for external decoding codec chips. Audio device manufacturers can adopt this module to develop lightweight, low-power wireless communication headsets, portable audio receivers and professional wireless tour guide terminals for commercial scenarios. 4. Outdoor Security and Emergency Communication Base Stations Municipal security monitoring and outdoor emergency safety systems require wide-range audio coverage and stable voice broadcast capabilities. Cooperating with Ebyte outdoor industrial communication gateways, the EWM104-BT3095 acts as a high-stability long-range Bluetooth audio bridge. It receives remote voice signals within an open-area 200-meter coverage radius and outputs analog DAC audio to external high-power horn speakers, achieving clear and stable outdoor emergency voice warnings and security broadcasting. Technical FAQs About EWM104-BT3095 Module Q: What audio output formats does the EWM104-BT3095 module support? A: The EWM104-BT3095 supports complete analog and digital dual audio interfaces. It supports analog DAC audio output, as well as mainstream digital audio formats including I2S and SPDIF. Equipped with built-in Class-AB and Class-D audio drivers, the module can directly drive headphones or connect to external industrial power amplifiers without additional peripheral circuits. Q: What is the maximum effective communication distance of the module? A: Adopting the latest Bluetooth 5.4 protocol specification, the EWM104-BT3095 achieves a maximum wireless transmission distance of 200 meters in open and unobstructed environments, delivering longer coverage and stronger anti-interference performance compared with traditional Bluetooth audio modules. Q: How to configure and integrate the module into the main control system? A: The module adopts standard UART serial port communication to interact with mainstream MCU main control units. Developers can complete parameter configuration, function switching and status query via universal AT commands. Meanwhile, programmable PIO pins support customized logic development and flexible power management adaptation, facilitating rapid secondary development and system integration for IoT embedded projects. Q: What are the core differences between EWM104-BT3095 and EWM104-BT5125? A: The EWM104-BT3095 is built on the Qualcomm QCC3095 chip platform, supporting Bluetooth 5.4 protocol, 200-meter long-distance transmission and professional SPDIF digital audio output, which is more suitable for industrial long-range audio transmission scenarios. In contrast, the EWM104-BT5125 adopts the Qualcomm QCC5125 solution with Bluetooth 5.1 protocol and a standard transmission distance of 100 meters, more applicable for short-distance consumer audio devices.