- Power supply voltage (USB): 5V DC - Input/Output voltage: 3.3V DC - SoC: ESP8266 (ESP-12F Module) - CPU: Tensilica Xtensa LX3 (32 bit) - Clock frequency: 80MHz / 160MHz - Instruction RAM: 32kB - Data RAM: 96kB - External flash memory: 4MB - GPIO digital pins: 17 - ADC analog pin: 1 (BUT voltage range is: 0 - 1V) - UART: 2 - USB serial chip: CP2102 - PCB antenna - 802.11 b/g/n - Wi-Fi Direct (P2P), soft-AP - Integrated TCP/IP Protocol Stack - Output power of + 19.5dBm in 802.11b mode - Leakage current less than 10uA - Wake up and transmit packets in - Standby power consumption Package: 1 x NODEMCU V2 ESP8266 CP2102 WIFI (AMICA)