758 | C4 Electronic faucets · Installation M3-E Installation, use and maintenance 1.5. CONNECTING SUPPLY 2 2 3 1 AC DC 100 - 240 V 4 X 1.5V LR6 AA 50 - 60 Hz ALKALINE WARNING : Connect the supply cable and t it as shown in the gure. Close the box using the screws. Mount the housing in a place where it is easy to replace the batteries (depending on the model). The housing has one superior drill hole for hanging to the wall if preferred.