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High/Low Temp LED
This LED lights up when the freezer temperature exceeds the limit of high/low alarm temperature set
point.
Hot Condenser LED
This LED lights up when the temperature at the condenser outlet is 8°C warmer than the sensed ambient
temperature.
Low Battery LED
This LED lights up when either the battery voltage is too low, switch battery is not turned on, or battery is
not connected.
Other Alarms LED
This LED lights up when there is an alarm other than high/low temp, hot condenser, and low battery.
USB Interface
To download the event log and the logged temperature data for system diagnosis.