ESP8266 WROOM-02 With Breakout Board


ESP-WROOM-02 is the famous WiFi module from Espressif System, the company that produce ESP8266 WiFi chip. This the SMD version with FCC/CE/TELEC certification.

This module is a highly integrated WiFi 802.11 b/g/n module that consumes extremely low power while providing a wireless internet connection for embedded devices. With a very small form factor (18mm by 20mm), this wireless module easily assimilates into resource limited devices. These features make it a great choice for OEMs to connect their IoT (Internet of Things) applications.

ESP-WROOM-02 is a 32-bit low power micro-controller (MCU) that integrates with TCP/IP network stacks; the included 10-bit ACD interfaces with HSPI, SDIO, UART, PWM, I2C and I2S. Programs and firmware can be stored in the integrated SPI flash with 16Mbits (2MB) capacity.


  • 802.11 b/g/n
  • Fast sleep/wake context switching
  • Adaptive radio biasing
  • Advance signal processing
  • Integrated low power 32-bit MCU
  • Built in SPI Flash: 16MBit, 2MB
  • Integrated TCP/IP protocol stack
  • Integrated TR switch, balun, LNA, power amplifier and matching network
  • Integrated PLL, regulators and power management unit
  • Supports security protocols WPA/WPA2
  • Supports Station / SoftAP / Station+SoftAP operation modes
  • Supports Tranmission Control Protocol (TCP) and User Datagram Protocol (UDP)
  • Supports WiFi Protected Setup (WPS) for easy setup and configuration
  • Supports mesh networking
  • Supports Smart Link Function for both Android and iOS devices
  • Supports Cloud Server Development
  • Custom firmware development via SDK
  • Download and write firmware via host
  • User configuration via AT Instruction Set, Cloud Server and Android/iOs App
  • FCC, CE and TELEC certified


  • Model: ESP-WROOM-02
  • Wireless Standard: IEEE 802.11b/g/n
  • Frequency Range: 2.412GHz – 2.484GHz
  • Hardware Interface: UART, I2C, PWM, GPIO, ADC, SPI
  • Operating voltage: 3.0 – 3.6VDC
  • Wireless Network Type: STA/AP/STA+AP
  • Security: WEP/WPA-PSK/WPA2-PSK
  • Encryption: WEP64/WEP128/TKIP/AES
  • Firmware Upgrade: UART or OTA Remote Upgrade
  • Network Protocol: IPv4, TCP/UDP/FTP/HTTP
  • Dimension: 18mm x 20mm x 3mm
  • Antenna: 3dBi PCB on-board antenna

Packing List:

  • 1 x ESP-WROOM-02 WiFi Module (SMD)

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