Accepting input signal from variety of devices, Annunciator Target Relay illuminates bright LED to indicate trip event, and also sends signals to activate up to 2 other devices within system. Once trip signal has been detected, ATR latches on, keeping LED lit until it has been manually reset. Target LED is highly visible, even when viewed from extreme angles. It operates in 37-140 Vdc range. Trip time can be specified from 0.002-60 sec.