Data-Logger Temperature Temp Range (F) -31 Degrees to 122 Degrees F Voltage Range 3 V Accuracy +/-0.2 Degrees C (0 Degrees to 10 Degrees C) +/-1 Degrees C Temperature Time Intervals 2 sec to 2 mo Software Required Yes Interface USB Calibration Certificate Yes Includes CER2350 Battery Intructions and Traceable Certificate