This was shown in the video on the table. Lewan says this was a Termometro a 4 canali TM-947 SD.
4 canali evidently means you can attach up to 4 thermocouples. http://www.bergamomisure.it/parametri-ambientali/termometri/termometro-datalogger-4-canali-tm-947-con-scheda-sd.html - Jed
