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ESP-WROOM-02U - Low-Power Wi-Fi Module with U.FL (IPEX) Connector



Stock Status: Out of Stock In Stock

Delivery: 2MB ships same or next business day
4MB/2MB (high temp) ships within 5 to 7 business days

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The ESP-WROOM-02U is a compact, low-power, Wi-Fi module incorporating the ESP8266EX chip. The device supports an external U.FL (IPEX) connector for optimized RF performance. It’s low power consumption and compact size (18 x 14.3 x 3.2 mm) makes the device essential for Internet of Things (IoT) applications.

Common applications include:

  • Internet of Things (IoT) solutions
  • Industrial wireless control
  • Wearable electronics
  • Home automation
  • Sensor networks
  • Wi-Fi location-aware devices


The ESP8266EX chip provides a Tensilica L106 32-bit RISC processor with a maximum clock speed of 160 MHz. The chip supports SPI flash memory with options of 2MB or 4MB and works with the following SPI modes:

  • Standard SPI
  • DIO (Dual I/O)
  • DOUT (Dual Output)
  • QIO (Quad I/O)
  • QOUT (Quad Output)


The WROOM-02U is customizable with 80% of the processing power available for development through the Real-Time Operating System (RTOS) and Wi-Fi stacks. GitHub provides additional information and code examples.



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Order Summary


Flash Memory

Operating Temperature

Manufacturer Part # (MPN)

GC-ESP-WROOM-02U 2 MB -40ºC to 85ºC (-40ºF to 185ºF) ESP-WROOM-02U
GC-ESP-WROOM-02U-4MB 4 MB -40ºC to 85ºC (-40ºF to 185ºF) ESP-WROOM-02U (4 MB)
GC-ESP-WROOM-02U-HT 2 MB -40ºC to 105ºC (-40ºF to 221ºF) ESP-WROOM-02U (M1102H1600US3Q0)


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Delivery: 2MB ships same or next business day
4MB/2MB (high temp) ships within 5 to 7 business days

Availability: in stock

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