Water Temp/Light Data logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured Not Applicable, Minimum Dew Point Measured Not Applicable, For Phase Not Applicable, Calibration Certificate Type Not Applicable, Minimum Sampling Rate 1 sec, Maximum AC Current Measurement Not Applicable, Maximum Relative Humidity Measured Not Applicable, Maximum AC Voltage Measured Not Applicable, Minimum Operating Temperature Degrees F -4 Degrees F