A Maximum Minimum Temperature System or MMTS is a temperature recording system that keeps track of the maximum and minimum temperatures that have occurred over some given time period.
[1] The earliest, and still perhaps most familiar, form is the Maximum minimum thermometer invented by James Six in 1782.
[citation needed] Today a typical MMTS is a thermistor.
This may be read locally or can transmit its results electronically.
This meteorology–related article is a stub.