The following are the few advantages for NodeMCU that is based on ESP-M2 and that is 2.4G wifi development Board: - ESP8285 is equivalent to ESP8266 + 1M Bytes flash - Compatible with official version Nodemcu board - It makes you easier and faster to complete the project of Wifi remote home appliances - Wireless upload program available - It is built based on the mature and popular ESP8285 technology. You can take advantage the abundant resources available on the web. - It has built-in USB-TTL serial with super reliable industrial strength CH340 for superior stability on all supported platforms. - Antenna Type: Built-in PCB antenna is available. - Wireless Network Mode: station / softAP / SoftAP + station. - Wireless criteria: 802.11 b / g / n. - WIFI @ 2.4 GHz, support for WPA / WPA2 security mode. - Working voltage: 3.3V - IO logic level: 3.3V - Micro USB socket input current: 500mA(MAX) - ADC pin (A0) input voltage: 0-3.3V - Built-in Flash capacity: 1M Bytes - Clock frequency: 80MHz or 160MHz - Applications: Smart Car, Home automation, Sensor networks, Industrial wireless control