The ELK-955 is a Two-Line RJ31X/38X Telephone Jack containing solid state transient suppression designed to protect the telephone inputs on an alarm control. It responds to power surges and transients in less than 1 nanosecond, automatically restoring after each surge within the specified ratings. The ELK-955 is compact and easy to install and features high quality, clearly labeled screw terminals, 8 pin modular phone connector, built-in tamper loop, and automatic shorting pins for cord removal. The ELK-955 is FCC Registered under part 68 and eliminates the need for a separate RJ31X telephone jack.