Littelfuse FB120A is a compact and reliable product designed for use in flasher and lamp failure applications. With an output load rating of 5 A resistive, it features one isolated SPDT relay and two solid-state line voltage outputs rated 0.5 A steady and 5 A inrush. The termination type is a 7 position barrier block for 20 AWG to 14 AWG wire. It operates at an input AC line frequency of 50/60 Hz with a tolerance of ±15%. With encapsulated circuitry, it ensures durability and longevity. The trip delay range for flasher failure is fixed at 6 s and for lamp failure is fixed at 10 s. The product provides clear indications of lamp failure and flasher failure with LED glows.