 On the technical side, Bluetooth 5 will quadruple the range by using increased transmit power or coded physical layer, double the speed by using optional half of the symbol time compared to Bluetooth 4.x, and provide an eight-fold increase in data broadcasting capacity by increasing the advertising data length of low energy Bluetooth transmissions compared to Bluetooth 4.x, which could be important for IoT applications where nodes are connected throughout a whole house.The Bluetooth SIG released Mesh Profile and Mesh Model specifications officially on 18 July 2017.Mesh specification enables using Bluetooth Low Energy for many-to-many device communications for home automation, sensor networks and other applications.