Kit includes battery pack transformer and 9' connecting cable to connect to a user-supplied central 24V AC power supply (not included). Hardwire directly to user-supplied central 24V AC power supply and hide connecting cables in the wall. Save time and money by connecting multiple dispensers to a single central transformer. No batteries to purchase or replace saves money and maintenance time and eliminates service interruptions due to low batteries. No batteries to dispose of saves battery disposal fees and reduces impact to the environment.