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Ai Thinker ESP32-A1S WiFi+Bluetooth Audio Development Board

449.00 + GST

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Ai-Thinker ESP32-A1S WiFi+Bluetooth Audio Development Board 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.

Ai-Thinker ESP32-A1S WiFi+Bluetooth Audio Development Boards internal circuit is highly integrated, supports a variety of peripherals, can support secondary development, and quickly realize product differentiation. ESP32-A1S adopts an SMD package to realize the 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 WiFi 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.


Module Model ESP32-A1S
Antenna Type IPEX and PCB
Audio Fomat MP3, sWAV, sM4, sAAC, sFLAC, sOGG, sOPUS
Audio Input Support LINEIN and 2-way MIC input
Audio Output Support 1 channel headphone output and 1 channel left and right speaker output
Bluetooth Version 4.2
Custom IO Port 14
Operating Temperature (C) -20 to 85
Package/Case SMD-38
Current Dissipation (mA) 350
Input Supply Range (VDC) 3.3
Receiving Sensitivity 54 Mbps (3/4 64-QAM): -70dBm
6 Mbps (1/2 BPSK): -88dBm
CCK, 1 Mbps : -90dBm
CCK, 11 Mbps: -85dBm
MCS7 (65 Mbps, 72.2 Mbps): -67dBm
Security WPA/WPA2/WPA2-Enterprise/WPS
SPI Flash Default 32Mbit
Transmit Power (dBm) 802.11b: 172 dBm (@11Mbps)
802.11g: 142 dBm (@54Mbps)
802.11n: 132 dBm (@MCS7)
UART Baudrate Default 115200 bps
Weight (gm) 2.5
Height (mm) 3
Length (mm) 31.60
WIFI 802.11 b/g/n/, Support DLNA protocol
Shipment Weight 0.01 kg
Shipment Dimensions 4 4 1 cm

* product image for illustration purposes only. actual product may vary.


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