Serial wifi module based on ESP-12, is an ultra low power UART-WiFi module. It has excellent size and ULP technology, low power consumption, designed for mobile devices and IoT. https://elecena.pl/product/6057594/crowtail-serial-wifi 2016-05-07 https://elecena.pl/product/6057594/crowtail-serial-wifi 2025-12-17