Narva Eurotech L.E.D Strobe/Rotator Light (Amber) 6 Selectable Flash Patterns, Flange Base. 12/24 Volt Dual voltage circuitry, polycarbonate lens, vibration resistant, solid state circuitry & fully sealed to IP65, SAE Class 1 light output, reverse polarity protected. Multiple units can be set to synchronise and/or alternate flash patterns.Ideal for commercial and construction environments.