KX-TGA550M 5.8 GHz Add on Handset from Panasonic
5.8GHz Digital Frequency Hopping Spread Spectrum Technology1 Line Operation Requires KX-TG5561M, KX-TG5566M, KX-TG5571M, or KX-TG5576M system to operate Backlit LCD on HandsetCaller IQ Compatible Intercom between Handsets and Base Phone Directory...