2478 by Adafruit Industries LLC Design and production,in Shenzhen Tuoyue Electronics Co., Ltd. Spot sales,And can pass Shenzhen Tuoyue Electronics Co., Ltd. Purchasing。2478 Price reference $ 0。2478 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification，In the information 2478 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial
