What is the battery on the circuit board, and/or will I lose my events if the power goes out?
Its purpose is to keep the clock running, which will allow the data logging to record when the power goes out and for how long the power was off. The battery can last up to five years without a replacement but, it is recommend that it be change every year. If the battery is lost and the power goes out all data and all settings are retained and will function once power is restored, however, the date and time will re-set to 00.
