Whelen, Dominator, Four TIR3 Light Stick Incredibly bright TIR3 Super-LED modules Internal self-contained electronics Fully encapsulated, fully waterproof Waterproof connectors Good for internal or external mounting Many Scan-Lock flash patterns Small diameter 4 or 6 conductor 20 AWG wires Slide bolt mount, standard Seven flash patterns Dominator pairs may be synchronized to each other or to other Whelen synchronizing products Waterproof design Low profile aluminum extrusion Self-contained electronics Standard 2 wire TIR3 Super-LED lamp modules Four safety colors available Scan-Lock flash patterns Thin 4-conductor 20 AWG 12 inch cable -12 VDC, Ground, Sync, Scan-Lock. 5 year warranty