"Telatemp’s ML-HA Temperature\/Humidity Data Logger is designed to monitor temperatures from -40°F to +176°F (-40°C to +80°C) with 0.01°C resolution and humidity from 0 to 95%RH with 0.1%RH resolution. This small, reusable data logger will record up to 500,000 date and time stamped temperature\/humidity readings at user-defined intervals from 1 second to 24 hours.","MLSP-USB Software & USB Interface is required.See product information sheet for specifications."