ESP-WROOM-02 is a low-power 32-bit MCU Wi-Fi module, based on the ESP8266 chip.
TCP/IP network stacks, 10-bit ADC, and HSPI/UART/PWM/I2C/I2S interfaces are all embedded in this module.
Power supply voltage: DC 2.7 ~ 3.6V
Consumption current: average 80mA
Built-in flash memory: 2MB
Corresponding WiFi protocol: 802.11b / g / n (2.4GHz)
Wi-Fi Mode: station / softAP / SoftAP + station
Security: WPA / WPA 2
Encryption: WEP / TKIP / AES
Size: 18mm × 20mm × 3mm