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ESP-WROOM-02 Module


Backorder (Delivery in 2-4 Weeks)

Wi-Fi 802.11b/g/n Transceiver Module 2.4GHz ~ 2.5GHz Integrated, Trace Surface Mount


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ESP-WROOM-02 Module Introduction

ESP-WROOM-02 Module that integrates ESP8266EX. The module has been adjusted to get the best RF performance. We recommend using ESPWROOM-02 for tests or for further development.

The module size is (18.00 ± 0.10) mm x (20.00 ± 0.10) mm x (2.80 ± 0.10) mm. The type of flash used on this module is an SPI flash with a package size of SOP 8-150 mil. The gain of the on-board PCB antenna is 2 dBi.

ESP8266EX integrates a Tensilica L106 32-bit RISC processor, which achieves extra-low power consumption and reaches a maximum clock speed of 160 MHz. The Real-Time
Operating System (RTOS) and Wi-Fi stack allow 80% of the processing power to be available for user application programming and development. The CPU includes the
interfaces as below.

  • Programmable RAM/ROM interfaces (iBus), which can be connected with memory controller, and can also be used to visit flash.
  • Data RAM interface (dBus), which can connected with memory controller.
  • AHB interface which can be used to visit the register.


SKU: Module ESP-WROOM-02 Categories: , ,
Categories Items Specifications
Test Reliability HTOL/HTSL/uHAST/TCT/ESD
Wi-Fi Wi-Fi protocols 802.11 b/g/n
Frequency range 2.4 GHz ~ 2.5 GHz (2400 MHz ~ 2483.5 MHz)
Hardware Peripheral interface UART/HSPI/I2C/I2S/IR Remote Control
Operating voltage 2.7 V ~ 3.6 V
Operating current Average:80 mA
Minimum current delivered by
power supply
500 mA
Operating temperature range –40 °C ~ 85 °C
Storage temperature  –40 °C ~ 85 °C
Package size (18.00 ± 0.10) mm x (20.00 ± 0.10) mm x (2.80±0.10) mm
External interface
Software Wi-Fi mode Station/SoftAP/SoftAP + Station
Security WPA/WPA2
Encryption WEP/TKIP/AES
Firmware upgrade UART Download/OTA (via network)/Download and write firmware via host
Software development Supports Cloud Server Development/SDK for custom firmware development
Network protocols IPv4, TCP/UDP/HTTP/FTP
User configuration AT Instruction Set, Cloud Server, Android/iOS app

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