ESP32-A1S Wi-Fi+BT SoC Audio Module -IPEX block output (SE-113990579)

ESP32-A1S Wi-Fi+BT SoC Audio Module -IPEX block output (SE-113990579)

Reference: SE-113990579

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ESP32-A1S Wi-Fi+BT SoC Audio Module -IPEX block output (SE-113990579)


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ESP32-A1S Wi-Fi+BT SoC Audio Module -IPEX block output (SE-113990579)


ESP32-A1S is an ultra-small, powerful module. Built-in advanced low-power dual-core 32-bit CPU and Codec AC101 audio decoding chip, can be widely used in various IoT applications, suitable for home smart devices, smart Audio, story machine solutions, etc., are the ideal solution for IoT applications.

ESP32-A1S internal circuit is highly integrated, supports a variety of peripherals, can support secondary development, and quickly realize product differentiation.

ESP32-A1S adopts SMD package to realize rapid production of products and provide customers with high-reliability connection mode. It is especially suitable for modern, large-scale, low-cost production methods, and is convenient for various IoT hardware terminal applications.


  • The smallest 802.11b/g/n Wi-Fi BT SoC Module 

  • Low power 32-bit CPU,can also serve the application processor

  • Built-in AC101 Codec audio decoding chip, can support playing music and recording

  • Built-in 520 KB SRAM, external 4MPSRAM


  • Support for firmware upgrade (FOTA) 

  • Antenna supports on-board antenna or IPEX block output

  • Supports a variety of mainstream compression and lossless audio formats, including M4A, AAC, FLAC, OGG, OPUS, MP3, WAV, etc.

  • Supports audio input methods such as MIC and Line-in.



Technical Details

Dimensions 32mm x 19mm x 3mm
Weight G.W 10g     N.W 2.50g
Battery Exclude
Package SMD-38
SPI Flash Default 32Mbit
Bluetooth Bluetooth 4.2 BR/EDR and BLE standards, support A2DP, AVRC protocol, etc.
Wi-Fi 802.11 b/g/n/, Support DLNA protocol
Audio Output Support 1 channel headphone output and 1 channel left and right speaker output
Audio Input Support LINEIN and 2-way MIC input
Custom IO port 14
UART Baudrate Default 115200 bps
Antenna Onboard PCB antenna or IPEX antenna
Transmit Power 802.11b: 17±2 dBm (@11Mbps); 802.11g: 14±2 dBm (@54Mbps); 802.11n: 13±2 dBm (@MCS7)
Receiving Sensitivity CCK, 1 Mbps : -90dBm; CCK, 11 Mbps: -85dBm; 6 Mbps (1/2 BPSK): -88dBm; 54 Mbps (3/4 64-QAM): -70dBm; MCS7 (65 Mbps, 72.2 Mbps): -67dBm
Power Dissipation 350mA
Security WPA/WPA2/WPA2-Enterprise/WPS
Power Supply Range 3.3V±0.3V
Operating Temperature -20 ℃ ~ 85 ℃
Storage Environment -40 ℃ ~ 90 ℃ , < 90%RH

Part List

ESP32-A1S Wi-Fi+BT SoC Audio Module (IPEX block output) 1
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