HQRP AC Adapter/Charger / Power Supply Compatible with Panasonic KX-TG5439 KX-TG5439S KX-TG5451 KX-TG5452 Cordless Phone Base Unit + HQRP Coaster HQRP&reg; Base Unit AC Adapter plus HQRP&reg; Coaster; Input: 120V AC; Output: DC 9V, 500mA; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; Compatible with Original AC Power Adapter; 1 Year warranty!