An Arduino compatible UNO board with an integrated ESP8266 board, which makes it easy to connect your projects to the cloud without the need for additional modules. Features the ATmega328P and standard UNO layout, and includes a set of DIP switches to configure the serial connections. Uses a Micro-B USB lead such as WC7723 for connecting to the computer and uploading sketches. For full instructions please refer to the manual available on the downloads tab. Please note: To talk to board you need to download and install CH340 Driver (search for driver on the net). You must upload code to both processors then configure the switches for them to talk to each other. Manual Software Specifications Transmission frequency : 2.4GHz Transmission power : 10mW Transmission range : 100m Receiver Antenna Style : Internal Antenna Transmitter Antenna Style : Internal Antenna Length : 65mm Width : 50mm Height : 15mm Weight : 25g Packaged Volume : 0.17l Packaged Weight : 0.03kg Packaged Length : 9.9cm Packaged Width : 9.9cm Packaged Height : 1.7cm USB Port Types : USB Micro Type B Number of USB ports : 1 ports Microcontroller : ATMega328 + ESP8266 Supported Wi-Fi Modes : 802.11n802.11g802.11b