We are proud to serve First Responders and Law Enforcement Officers and these strobe lights will not disappoint! Using the latest in solid-state LED technology these Super-Bright LED strobe lights blow away the competition. The built in controller module allows you to select 19 different patterns without the need of an external LED controller. Product Features: - Width: 3.75 inches - Length: 2.75 inches - Height: 2.0 inches - Lifetime: 100,000 hours - Flush Mount Design - Synchronize Multiple Units - Mounting Brackets Included 19 Different Flash Patterns Including: - Random(default) - Single(split) - Double(split) - Quad(split) - Quint(split) - Mega(split) - Ultra(split) - Single-Quad(split) - Single H/L(split) - Single(all) - Double(all) - Quad(all) - Quint(all) - Mega(all) - Ultra(all) - Single-Quad(all) - Single-H/L(all) - Steady 2(california) - Steady 4(all) Package Includes: 1 x ORACLE Dual 6 LED Undercover Strobe Light 2 x Mounting Brackets To select Flash Pattern, just apply +12V to Yellow Wire: - for less than 1 second for next pattern - for more than 1 second for previous pattern - for more than 5 seconds to reset to default