Siemens 2400 Gigaset 2.4 GHz Gray Supplementary Handset and Charger Supplementary handset and charger Transforms your cordless phone into a multiuser cordless system For use with Siemens models 2402, 2410, 2415, and 2420 150-foot range indoors, 1,000-foot range outdoors LCD display with onscreen menu and caller ID/call waiting