Relative Humidity Temperature Meter, Included: Carrying Case, Sensor Cover, Battery (Installed), Users Manual, Display: Dual Display, Minimum/Maximum Memory: Yes, Auto Power Off: Yes, Response Time: Humidity: 180 S, Temperature: 10 S, Dew Point Range: -20 To 60 DEG C At Plus/Minus0.8 DEG C Accuracy, Temperature Accuracy: Plus/Minus 0.8 DEG C, Wet Bulb Temperature Range: -20 To 60 DEG C At Plus/Minus0.8 DEG C Accuracy, Humidity Accuracy: Plus/Minus 3 PCT RH At 23 DEG C, Relative Humidity Range: Less Than 70 PCT, Temperature Range: 0 - 40 DEG C, Dimensions: 240 MM Length X 54 MM Width X 34 MM Height, Battery: 9 V, NEDA 1604 Or JIS 006P Or IEC6F22, Dry Bulb Temperature Range: -20 To 60 DEG C, Resolution: 0.1 PCT RH, CE Certified