The NODE uses two standard 9-volt batteries (not included) to operate the valves and program the controller. The controller can operate using either a single 9-volt battery or using two 9-volt batteries. Under normal conditions, the expected life is one year for a single battery and two years when using two 9-volt batteries.
NOTE: The NODE has non-volatile memory which allows for the battery to be removed without losing program information.
1 . Unscrew the rear body of the NODE body to gain access to the battery compartment.
2 . Insert the battery/batteries into the battery tray and connect to the controller using the battery connector.
3 . Make sure that no water is inside the battery compartment.
4 . Screw the NODE rear body back onto the front half.
NOTE: Make sure that the seal marker on the rear half of the NODE lines up with the front half (as shown in image on right), ensuring that a proper seal is created.