Alcatel 3GV28050AAAA02 rxternal ringing interface module, DC IN/DC OUT: 10-56 VDC 300mA, black and silver, WxDxH: 124x130x30 mm (supplied with 3 circuits plug to screw, 1 RJ11/RJ11 3 meters (10 feet) cable and 1 DC Japan/DC Japan 3 meters (10 feet) power cable)