Siemens Gigaset 4000 Accessory Handset for 4000 and 4200 Series Expandable Phones (White) Supplementary handset and charger Transforms your cordless phone into a multiuser cordless system For use with Siemens models 4010, 4015, 4200, 4210, and 4215 150 feet indoor/1,000 feet outdoor range LCD display with onscreen menu and caller ID/call waiting