ESP-12 (ESP8266 ) is an ultra-low power UART-WiFi module, it has excellent size and ULP technology. You can use the module to transfer data through the serial port and apply it to the IoT field. https://elecena.pl/product/6165293/esp8266-based-wifi-module-fcc-ce 2016-06-30 https://elecena.pl/product/6165293/esp8266-based-wifi-module-fcc-ce 2017-02-01 https://elecena.pl/product/6165293/esp8266-based-wifi-module-fcc-ce 2025-12-17