REED LM-81HT Thermo-Hygrometer, 32 to 122°F (0 to 50°C), 10-95% RH


This compact thermo-hygrometer measures temperature and humidity and features Data Hold and Min/Max functions. The LM-81HT is easy-to-use and comes with a wrist strap for one handed field operation.


  • Compact and lightweight
  • Dual LCD display
  • User selectable °F/°C
  • Data Hold and Min/Max function
  • Low battery indicator and auto shut-off


Measuring Range 32 to 122°F (0 to 50°C)
Accuracy ±2.5°F (1.2°C)
Resolution 0.1°F/°C
Measuring Range 10-95% RH
Accuracy ±5% RH
Resolution 0.1% RH
General Specifications
Display Dual Display, LCD
Data Hold Yes
Min Yes
Max Yes
Auto Shut-off Yes (after 10 mins)
Low Battery Indicator Yes
Power Supply 9V battery
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 140°F (-10 to 60°C)
Operating Humidity Range 10-80%
Dimensions 6.1 x 2.4 x 1.3" (156 x 60 x 33mm)
Weight 5.6 oz (160g)