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. - Plugs into 12 volt power source - Width: 4 1/4 inches - Length: 25 inches - Height: 11.5 inches - Lifetime: 100,000 hours - Flush Mount Design Note Dual Color is available by custom order only. Please contact a salesperson for more info. To select Flash Pattern, press switch on 12 Volt plug. 19 Different Flash Patterns Including but not Limited to: - Random(default) - Steady - Single - Mega - Double - Triple - Quad - Quint - 8 Flash - Single-Quad - Single H/L - Single-Triple-Quint 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 Package Includes: 1 x ORACLE 42 LED EMERGENCY STROBE UNIT 1 x User Manual