IOT Temperature Humidity Logger has Flat Rate SIM Card and built-in GSM modem, which enable an instant connection to the COMET Cloud. This has been designed to record the temperature as well as humidity from built-in sensors. The logger allows for the advanced recording and go well with a non-volatile electronic memory. IOT Temperature Humidity Logger allows for the advanced metrological traceability. This device allows for advanced weather monitoring and makes effective use of the arduino-based wireless sensor networks.