Panasonic KX-TG4771B Expandable Digital Cordless Answering System with 1 Corded and 1 Cordless Handset in Black

Panasonic's power back-up phone is designed to enable consumers to make receive phone calls with the cordless handsets in case of a power outage.DECT Plus technology takes the superb sound quality and outstanding range of DECT 6.0 phones to a whole level. By increasing the frequency of error correction by up to 80x, the transmission quality is improved and the phone's range is extended. Engineered to work in 1.9 GHz frequency, the DECT 6.0 phones won't conflict with common wireless devices such as 2.4 GHz routers, wireless keyboards and mice, microwave ovens and other household items. And because it's digital, you'll enjoy long range and clear sound while deterring eavesdropping.