Temperature Humidity Meter, Display: Dual Back Light, Minimum/Maximum Memory: Yes, Response Time: 60 S, Temperature Accuracy: 0 - 45 DEG C At (Plus/Minus 0.5 DEG C), Humidity Accuracy: 10 - 90 PCT At 23 DEG C For (Plus/Minus 2.5), Relative Humidity Range: 5 - 95 PCT, Temperature Range: -20 To 60 DEG C, Dimensions: 194 MM Height X 60 MM Width X 34 MM Depth, Battery: (4) AAA Alkaline, Environmental Condition: Operating Temperature: -20 To 60 DEG C, Humidity: 0 - 55 DEG C, Storage Temperature: -20 To 60 DEG C, Resolution: 0.1 DEG C.