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Surface Mount Packaged IoT Computer

The Onion Omega2S IoT Computer Modules are designed for applications that require drop-in connectivity and computing. The 34x20x2.8 mm package features a CPU, memory, flash storage, and a WiFi radio. It runs a Linux Operating System and is FCC certified, making it a small but powerful solution for IoT devices.

  • Drop-in WiFi-enabled Linux compute module for IoT applications
  • Dual mode 2.4 GHz 802.11 b/g/n WiFi - simultaneously host a WiFi access point and connect to existing WiFi networks
  • CPU, memory, and flash storage are built-in - Only requires external antenna
  • Runs OpenWRT Linux operating system out of the box
  • Features pins for USB, SD/eMMC storage support, ethernet, 3x UARTs, I2C, SPI, GPIOs
  • FCC and CE certified

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Product variants


RAM: 64MB, Flash: 16MB, Packaging: SMT


RAM: 128MB, Flash: 32MB, Packaging: SMT

Low Profile

Package measures a tiny
34 x 20 x 2.8 mm

Surface Mount

Designed for high-volume manufacturing of surface mount PCBs with pick and place machinery

U.FL Connector

U.FL Connector for External Wifi Antenna attachment

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Omega2S Development Kits

The Omega2S Development Kit includes everything you need to fully evaluate the functionality of the Omega2S Module and begin the development of your IoT product

  • Easy insertion socket for the Omega2S Module
  • USB, Micro-USB, Ethernet Connectors
  • Connectors Pins for all Input/Output Signals
  • Dual Reset Functions
O2S Dev Kit EMMC 2


SD Card Slot version

  • 8 GB External SD Card
  • Two (2) Omega2S modules
  • Two (2) Omega2S+ modules
  • 2 dBi uFL Tape Antenna
  • Micro USB Cable
  • Ethernet Cable


eMMC Memory version

  • Built-in 8 GB eMMC
  • Two (2) Omega2S modules
  • Two (2) Omega2S+ modules
  • 2 dBi uFL Tape Antenna
  • Micro USB Cable
  • Ethernet Cable

Documentation & Resources

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Frequently asked questions

Purchase samples from our distributors Mouser and Digikey

The minimum quantity required to purchase the Omega2S module directly from Onion is 500 units. For smaller quantities we recommend purchasing from our distributors Mouser or Digikey for more cost effective shipping options.

The lead time for bulk Omega2 module orders is 6 weeks. If you need units immediately for evaluation or development, please order from our distributors Mouser or Digikey.

The Omega2S is guaranteed to be available until January 2025

Yes, the Omega2S and Omega2S+ modules have FCC, CE, and RoHS certification. Find the certification documents here:

Fill out the form here and our sales team will get back to you with volume pricing info and more.

Shipped from Shenzhen, China FOB or DAP. See our volume ordering page for more details.

See our volume ordering page for all of the details.

Ready to scale your IoT products?

Contact sales for availability and bulk pricing

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