#{ '$' + (selectedVariant.price/100).toFixed(2) } $3.15

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

SKU: GC-ESP-WROOM-02U

MPN:

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

Availability: in stock

30 day Money Back Guarantee *Some Exceptions Apply

Warranty: 1 year Comprehensive support for all products

Authorized North America Distributor Stamp

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.

 

 

Compare ESP-WROOM-02 Series

 

Order Summary

 

SKU
Flash Memory
Operating Temperature
Manufacturer Part #
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)

 

Features of the ESP-WROOM-02U


  • Wi-Fi 802.11 b/g/n
  • Integrates with the ESP8266EX chip
  • External U.FL (IPEX) connector
  • Optimized RF performance
  • 2 MB or 4 MB SPI flash memory
  • Tensilica L106 32-bit RISC processor
  • 26-MHz crystal oscillator
  • Secure (encrypted) over the air (OTA) upgrades
  • SRRC, FCC, CE (RED), IC, NCC, KCC, TELEC (MIC) certified
  • Programmable RAM/ROM interface (iBus)
  • Programmable Data RAM interface (dBus)
  • AHB interface accesses the register
ANTENNA External U.FL (IPEX) connector
CERTIFICATIONS RF: SRRC, FCC, CE (RED), IC, NCC, KCC, TELEC (MIC)
Green: RoHS, REACH
DIMENSIONS 18 mm x 14.3 mm x 3.2 mm
FIRMWARE Upgrade: UART Download / OTA (via network)
Download and write firmware via host
FREQUENCY BAND Wi-Fi frequency: 2.4 GHz ~ 2.5 GHz (2400M ~ 2483.5M)
INTERFACES UART/HSPI/I2C/I2S/IR Remote Control
GPIO/PWM
MEMORY 2 MB or 4 MB
MPN ESP-WROOM-02U
PINS 18 pins
POWER Average Current: 80 mA
Minimum Current: 500 mA
PROTOCOLS Wi-Fi: 802.11 b/g/n (802.11n up to 150 Mbps)
Network: IPv4, TCP/UDP/HTTP/FTP
SECURITY/PROTECTION Security: WPA/WPA2
Encryption: WEP/TKIP/AES
SOFTWARE Supports Cloud Server Development
SDK for custom firmware development
TEMPERATURE RANGE Operating: -40ºC to 85ºC (-40ºF to 185ºF)
Storage: -40ºC to 85ºC (-40ºF to 185ºF)
High Temp option: -40ºC to 105ºC (-40ºF to 221ºF)
TIMERS On board clock: 26 MHz crystal
VOLTAGE Operating: 2.7V ~ 3.6V

Documentation

ESP-WROOM-02U Datasheet View (PDF)
ESP8266 Datasheet View (PDF)
ESP8266 Quick Start Guide View (PDF)

Downloads

ESP8266 AT Bin Download (ZIP)

Tech Support

We have the best technical support engineers that know how to use our products. If our Tech Support cannot solve your problem, we will contact the design engineer or manufacturer to help find a resolution.