The DS1922E and DS1922L have different temperature ranges, but the same width of 125°C. DS1922E: +15°C to 140°C DS1922L: -40°C to 85°C The reason for the different ranges, is that the DS1922E is suited for steam sterilization thus the higher temperature range. The DS1922L can be used for temperature logging in Cold Chain, Food Safety, Bio Science, and Pharmaceutical and Medical Products applications and thus has a lower temperature range.