The ACC 789 is ideal for use with all AC-powered Fairbanks Scales instruments. It can also be used with PCs, printers and other peripheral devices and other various scale accessories. The ACC 789 features three advanced warning lights. The “LINE OK” light indicates properly-wired outlets (required
for all surge suppressors to function). The “FAULT” light indicates faulty outlet wiring. If the third light, “PROTECTION PRESENT,” ever goes out, the surge suppressor will be replaced by Tripp Lite® under its lifetime warranty.?