Cool Beer DOO have one of the largest IoT devices deployment in Serbia and Southern Europe. More than 30000 devices is deployed across Serbia and nearby countries (Montenegro, Bosnia, Bulgaria, Romania). Our main IoT product is Cooler Manager, revolutionary B2B beer consumption monitoring equipment. Cool Beer is producing specially designed hardware and software for our clients (breweries) and for general public users. Specially designed and produced hardware and micro controllers, and various applications (Android, iOS, Win10), supported by specially designed Dashboard and reports for business companies. Dashboard, software backend and Cloud servers are designed to give maximum performance and comfort for our clients. Trusted by largest companies in the world, like Heineken, Carlsberg, Molson Coors, UBC and many others, Cool Beer continue to improve and strive to be most innovative company in the field. All Cooler Manager devices report to our cloud server in one hour interval, making our system and network one of the largest IoT networks in region. Our IoT network brings the latest technology to life, based on EGSM, 4G, LTE Cat M1, NB1 and NB2 we push the technical and communication limit on daily basis But, we don’t stop there, we developed much more, CO2 sensors that also report to Cloud, and Smart Coolers with LCD TV that can automatically update marketing content and report data to servers.