REED Instruments R6030 Temperature and Humidity Datalogger, -40 to 158&deg;F (-40 to 70&deg;C), 0-100% RH Temp./Humidity Range: -40 to 158F(-40 to 70C) / 0 to 100% RH Stores up to 16,000 temperature and 16,000 humidity readings Dual LCD displays current temperature, humidity, min/max and date/time Visible alarm (LED) if set max/min values are exceeded Includes wall mount bracket, screws, security lock, USB cable, software and battery