The external DC power cable is used to connect a user-supplied power source to the HOBO RX3000 Monitoring Station to charge the station's internal battery. The external power source can be an intermittent power source, such as a 6W or larger solar panel. The external power source must be able to supply 6W, but the average power used will be much less and depends on the number and type of sensors, logging interval, and the frequency of internet connection.
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