Connected IoT | CO2 sensors, Wireless, Temperature Data Loggers At Connected IoT we specialise in data acquisition and data logging. Our years of experience with data loggers from Eltek, Elpro, ClimaCheck and wireless M2M enable us to find the best product for your application. Our range start from single use data loggers to monitor temperature or humidity sensitive goods during manufacture, transport and storage. Simple report to PDF document ... Customers: Hospitals, Pharmacies, Government Departments.