Thermohygrometers at a glance

Product	Humidity Accuracy	Humidity Range	Power	Temperature Accuracy	Temperature Range	Type (Wall mount or portable)
Low-Cost Wall Mount Thermohygrometer	±5% RH from 15 to 25°C	10 to 90% RH	none required	±2°C	-20 to 40°C	wall mount
Handheld Thermohygrometer with dew point	±2%	0 to 100%	two AA batteries	±1°F (±0.5°C)	–40 to 140°F (–40 to 60°C)	Portable
Logging Thermohygrometer with Dew Point	±2%	0 to 100%	Two AA batteries (included)	±1°F (±0.5°C)	-40 to 140°F (-40 to 60°C)	Portable
Large Dial Wall Mount Thermohygrometer	±5% RH from 15 to 25°C	20 to 100% RH	none required	±2°C / ±3.6°F	-30 to 40°C / -22 to 122°F	wall mount
Basic Wall Mount Thermohygrometer	±3% RH from 20 to 50°C, ±5% RH beyond	20 to 99% RH	none required	±5°C / ±10°F	-20 to 50°C / -4 to 120°F	wall mount
Wall Mount Thermohygrometer with Digital Thermometer	±4% from 20 to 90% RH; ±8% from 90 to 100% RH	20 to 100% RH	one 1.5 V AA battery (included)	±1°C / ±1.8°F	-18 to 72°C / 0 to 160°F	wall mount