One’s position has become an important piece of information for our everyday lives in a smart city. Currently. a position can be obtained easily using smartphones that is equipped with low-cost Global Navigation Satellite System (GNSS) chipsets with accuracy varying from 5 m to 10 m. Differential GNSS (DGNSS) is an efficient technology that removes the majority of GNSS errors wi... https://allfixelectricales.shop/product-category/water-chamber-air-break/