Issue link: https://te.mouser.com/i/1475713
4 Connected LED Lighting Solutions backbone of a smart city and enable an ecosystem that will allow sensor nodes to be created that will all work together and innovate communication. Interoperability has been the promise of Zhaga. It started in 2017 when Zhaga released the first edition of Book 18. TE then released the Endurance S streetlight interconnect and Signify released its Xitanium SR Driver. These releases were the first time a solution was created specifically for LED streetlights. In 2019, the fully formed two-node architecture was realized upon the release of Book 18's second (2nd) edition. The key to the ecosystem is the intra-luminaire communication protocol. DALI has been a prevalent lighting protocol for many years. Although DALI-2 is a multi-master solution, it has no hierarchy built into it. When more than one control device is on the bus, the driver will respond to whichever one speaks last. This is a situation that could not be allowed to exist in street lighting. S mart cities have been discussed for many years, yet they have still not been realized. Municipalities have previously focused on replacing incandescent light sources with LED lighting. This change has created significant energy and cost savings, with the industry's accepted number for the amount of energy spent powering streetlights being thirty percent (30%) of a municipality's energy budget, and a city's lighting department budget often being in the black. TE Connectivity (TE) believes the future of street lighting is in controls. With controls promising further energy savings and the continued discussions of their use in smart cities, we are now seeing cities and governments creating departments and allocating budgets, but even this isn't driving the smart city forward. In recent years, two-node architecture has been the most exciting development in the industry. Two-node architecture has the potential to be the The Value of Two-Node Architecture in Street Lighting Two Node Architecture in Street Lighting: The Smart City Platform?