This is a new version of the high-performance 2.4G Wi-Fi development board based on the ESP-12E and CH340G. After installing the hardware package for this development board on Arduino-1.6.5 IDE, you can use the IDE to program and design.
- Specially supply for Arduino lover.
- Compatible with Arduino, you can use the Arduino IDE directly.
- Compatible with Nodemcu.
- It makes you easier and faster to complete the project of Wi-Fi remote home appliances.
- Wireless Upload Program available.
- It is built based on the mature and popular ESP8266 technology. You can take advantage the abundant resources available on the web. 
- It has built-in USB-TTL serial with super reliable industrial strength CH340G for superior stability on all supported platforms.
- Antenna Type: Built-in PCB antenna is available. 
- Wireless Network Mode: station / soft AP / 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
- Flash capacity: 4M Bytes
- Clock frequency: 80MHz or 160MHz
- Applications: Smart Car, Home automation, Sensor networks, Industrial wireless control

General
Brand    OPEN-SMART
Model    N/A
Form Color    Blue + Black
Quantity    1Piece
Material    PCB + Alloy + Plastic
Specification
Frequency    2.4GHz
Working Voltage     3.3V
Working Current    500mA
English Manual / Spec    Yes


Dimensions & Weight
Dimensions     1.34 in x 0.98 in x 0.24 in (3.4 cm x 2.5 cm x 0.6 cm)
Weight     0.32 oz (9.2 g)

Packing List
1 x Board
2 x Long female pin headers
2 x Short female pin headers
2 x Normal pin headers