Mikroprocesor WiFi; 802.11 b/g/n/e/i; 1MB-FLASH; 50kB-RAM; 2.4GHz; 72,2Mbps; 3V~3,6V; UART/SPI/I2C/I2S/SDIO/GPIO/IRDA/PWM; 5x5x0,75mm; -40°C ~ 125°C; https://elecena.pl/product/23427325/rf-esp8266ex-rf-esp8266ex 2023-05-11 https://elecena.pl/product/23427325/rf-esp8266ex-rf-esp8266ex 2025-09-04