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EMW3166 WiFi Module

Esp32, combo, wireless, Wi-Fi, wifi, emw3162, emw3239, emw3165, emw3166, esp8266, mxchip, nrf52840, smart

Out of stock
  • 10+: $8.46



Seeed fusion offers PCB/ PCBA manufacturing service for customized products based on EMW3166 WiFi Module with an online instant quote and fast delivery. Furthermore, business users can enjoy a free prototype and engineer support as well. Click here to learn more!

EMW3166 is one embedded Wi-Fi module of low-power, small-size and low-cost designed by MXCHIP. It integrates one Cortex-M4 microcontroller of 256Kbytes SRAM and 1Mbytes on-chip flash with another 2Mbytes on-board SPI flash added. Various peripheral interfaces of analog and digital are available. The power supply voltage is 3.3V. It applies half-hole footprint for hand-soldering. The module runs MICO, which is the IOT OS System of MXCHIP, and is available for secondary development. The TCP/IP protocols and security encryption algorithm could be applied in various Wi-Fi applications. In addition, several particular firmware prepares for some typical applications, like UART to Wi-Fi DTU, easylink configuration and services for cloud interfacing.



  • Integration of one Cortex-M4 MCU and one RF chip of 802.11 b/g/n

  • Cortex-M4 core at 100MHz

  • 2M bytes on-board SPI flash and 1M bytes on-chip flash

  • 256K bytes SRAM

Operation voltage

  • Low voltage mode: 2.3~3.0V

  • Normal voltage mode: 3~3.6V


  • 25 GPIOS

  • JTAG/SWD debug interfaces

  • Wi-Fi connectivity:

  • 802.11 b/g/n available

  • WEP, WPA/WPA2, PSK available

  • [email protected], [email protected], [email protected]

  • Receiver Sensitivity: -87dBm

  • Station, Soft AP and Wi-Fi Direct

  • Easylink available

  • On-board PCB antenna and IPEX connector for external antenna

  • CE, FCC compliant

Operation Temperature

  • -30°C~+85°C

Application scenarios

  • Auto electronics

  • Point of Sale system

  • Industrial automation systems

  • Medical/Health care

  • Smart home appliances

  • Smart LED

Technical details

Dimensions 32mm x16mm x3mm
Weight G.W 3g
Battery Exclude

Part List

EMW3166 WiFi Module(External IPEX antenna) 1


HSCODE 8517709000
USHSCODE 8517180050
EUHSCODE 8517180000
RoHS 1



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