The Extech 42260 & 42270 dataloggers allow you to take and store humidity and temperature readings from nearly any space and at nearly any interval. The Extech 42260 temperature datalogger stores up to 8,000 readings 42260: Temperature Datalogger Temperature Datalogger for 42265 kit and the 42266 Programmer/Printer Features: Wide operating temperature range: -40 to 185°F (-40 to 85°C) Records up to 8000 readings Use in storage containers, shipping vans, freezers and more Logs data for days, weeks or months - up to 1 year battery life Programmable sampling rate from 1sec to 2hrs plus Hi/Lo limits with alarm indication LCD displays current temperature Requires 42265 docking station for programming and data download Specifications: emperature Range -40°F to 185°F Reolution 0.1° Accuracy ±1°F (-4 to 122°F), ±2°F (-40 to -4°F, 122 to 185°F) Range -40°C to 85°C Reolution 0.1° Accuracy ±0.6°C (-20 to 50°C), ±1.2°C (-40 to 20°C, 51 to 85°C) Humidity 0 to 100%RH 0.1% ±5%RH General Datalogging Interval 1 sec to 2 hours Memory Temperature: 8000 points; Relative Humidity: 8000 points Dimensions 43x2.3x0.88" (76x57.2x22.3mm) Weight 2.6 oz. (72.6g) 42260 Extech Infrared thermometer IR Thermometer ÍÔ¹¿Òàôà·ÍÃìâÁÁÔàµÍÃì à¤Ã×èͧÇÑ´ÍسËÀÙÁÔẺÍÔ¹¿Òàô