APC by Schneider Electric G50B-20A2 G Type Line Conditioner - AC Noise, Transient, EMI / RFI, AC Surge protection - NEMA 5-20R - 120 V AC Input

LED status indicators - Quickly understand unit and power status with visual indicators. Sequenced turn on/off - Helps power on components in the proper order to prevent speaker stress. Proper sequencing can also help manage current draw on startup to prevent unnecessary circuit breaker tripping.