The RAB Lighting HIDFA-12S-E26-850-BYP is a 4/8/12W field-selectable LED HID replacement lamp with an E26 medium base, suited for retrofit applications requiring ballast bypass on 100277V universal voltage. It delivers 580/1160/1740 lumens at 5000K, 80 CRI, and up to 145 lm/W efficacy, providing three output levels in a single clear-finish lamp. Constant current driver and a 50,000-hour rated life minimize maintenance cycles in commercial and industrial installations.