BME280 by Bosch(博世) Design and production,in Shenzhen Qingshengda Electronics Co., Ltd. Spot sales,And can pass Shenzhen Qingshengda Electronics Co., Ltd. Purchasing。BME280 Price reference $ 3.252294。BME280 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information BME280 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial