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The 103B was similar to the 103, except it could be submerged in water or buried. Developed specifically for our BDR dataloggers, the 103B required one single-ended analog input. Excitation and ground connections could be shared with other high impedence sensors. Use with a BDR301 required the user to solder on an analog mating connector to the sensor leads.
Note: all analog sensors have to be soldered into one connector.