NodeMCU board ESP8266 WiFi module CH340 Type-c Description : * 802.11b/g/n * Built in Tensilia L106 ultra-low power consumption 32-bit micro MCU, with main frequency supporting 80 * Built in 10bit high-precision ADC * Built in TCP/IP protocol stack * Built in TR switch, balun, LNA, power amplifier and matching network * Built in PLL, voltage regulator and power management components,+18dBm A-MPDU, A-MSDU aggregation and 0.4s protection interval in 802.11b mode * Wi Fi @ 2.4GHz, supporting WPA/WPA2 security mode * Support AT local upgrade and cloud OTA upgrade * Support STA/AP/STA+AP working mode * Support Smart Config functions (including Android and iOS devices) HSPI, | ART, I2C, I2S, IR Remote Control, PWM, GPIO deep sleep holding current is 20 ? A. Turn off current is less than 5uA * Wake up, connect and transfer data packets within 2ms * Power consumption in standby mode is less than 1.0mW (DTM3)