The ELK-RJSET is for use with Alarm System Communicators, Line Fault devices, or other equipment as a means of connecting to the incoming telephone line. Includes USOC RJ31X 8 pin modular surface mount jack and 2 ft. 8 wire modular cord with plug on one end and spade terminals on the other.General InformationName: ELK-RJSET RJ BLOCK & CORDCategory: Elk Products Inc., Intrusion & Smart Home, Alarm Control Panels & Keypad, Alarm Control Panel AccessoriesUPC Code: 762158800177Country of origin: China. Country of origin is subject to change.