Espressif provides the SMD module—ESP-WROOM-S2 that integrates ESP8266EX. The module has been adjusted to achieve the best RF performance. We recommend using ESP-WROOM-S2 for tests or for further development. ESP-WROOM-S2 can work as the SDIO/SPI slave, with the SPI speed being up to 8 Mbps. The flash used on this module is a 2-MB SPI flash connected to HSPI, with a package size of SOP 8-150 mil. The gain of the on-board PCB antenna is 2 dBi.
All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.