Monitors both ambient temperature and relative humidity Alarm display if user-defined max-min values are exceeded Displays all status information through two LEDs Simply plug the logger into the USB port of your computer to begin downloading - no cables or wires are required Includes wall mount bracket and Windows compatible software Stores up to 16,000 temperature and 16,000 humidity readings User selectable measurement rate from 2 seconds to 24 hours Operating Temperature: -35°C to 80°C (-31°F to 176°F) Manufacturer Part Number: R6020 Temperature Range: -40 to 70°C (-40 to 158°F) Resolution (Temperature): 0.1°C/°F Accuracy (Temperature): ± 0.5°C (± 0.9°F) at -4 to 122°F (-20 to 50°C); ± 1.0°F (± 1.8°F) at all other ranges Humidity Range: 0 to 100% RH Resolution (Humidity): 0 to 100% RH Accuracy (Humidity): ± 2% RH Sampling Rate: User selectable rate (2 s, 5 s, 10 s, 30 s, 2 m 5 m, 10 m, 30 m, 1 h, 2 h, 3 h, 6 h, 12 h, 24 h) Power Supply: 3.6 V lithium battery Battery Life: 1-yr (5 s sample rate); 2.5-yr (10 s sample rate) Dimensions: 130 x 30 x 25 mm