The AD-SA1230XA AC adapter is used with ATW-CHG3/ATW-CHG3N charging stations and the AT8687 link kit(s), enabling up to five linked stations to be powered by a single power supply. 
 
Power Supply Unit compatible with ATW-CHG3 and ATW-CHG3N
One PSU for up to five charger (AT8687 link-kit needed)
Supplied with power cord (EU or UK type)