Panasonic VL-SA70SX Video Door Phone??(Wireless Both Way) 7 INCH LARGE LCD SCREEN WITH CLEAR AN CRIP IMAGE HIGH SYSTEM EXPANDABILITY (UPTO 3 MONITOR SYSTEM CAN BE CONNECTED) PBX CONNECTIVITY( ANSWER TO THE VISITOR FROM THE PBX TERMINAL) EXTENDABLE STORAGE UP TO 32 GB SD CARD AND VIDEO RECORDING OR SNAPSHOT AVAILABLE BRIGHTNESS/COLOR/TALK VOLUME ADJUSTABLE