The CEM DT-8891 Series of Digital Thermometers are precise Laboratory grade (0.15% + 1°C) rugged hand held tool. They are ideal Thermometers for HVAC and Central Heating Engineers. These thermometers work with K type temperature probes and Model DT-8891E can be used with infrared temperature adaptor IR-82 to measure IR temperature as well. The DT-8891E is a four input K type Thermometer and IR-82 can also be used along with it to measure in the non-contact thermometer mode. In addition DT-8891E has a built in data logger and a USB PC Interface facility as well.