ESP8266 Gizwits Develop Board Photoresistor SDK APP
For more info, Please visit below links:Http://site.gizwits.com/en/developer

Technical Details

Size (LWH): 2.3 inches, 1.7 inches, 1.3 inches
Product Details
Product Dimensions: 2.3 x 1.7 x 1.3 inches
Shipping Weight: 0.02 pounds (View shipping rates and policies)
ASIN : B0194Y6QJG