Testo Saveris 2-T21 Wireless Profile
The Testo Saveris 2-T21 is an environmental sensor which utilises 802.11b/g/n on the 2.4GHz band. It is often found within the pharmaceutical industry, to monitor the temperature and humidity of refrigerators and other storage areas for medicines.
The sensor uses MQTT 3.1.1 to communicate with a cloud broker. There is limited information online in regards to the wireless and MQTT capabilities of the devices. Below represents the conclusions made whilst analysing this particular device.