Hi SRoss,
This unit when installing needs to be connected to the ground of a dishwasher, garbage disposal, or to an electrical outlet ground to provide proper grounding. Note: In order for the unit to work properly the valve must be properly grounded. The unit also requires the use of 4 C batteries. Please refer to the installation manual at
http://www.deltafaucet.com/customer... for more details. I hope this helps.