SIGNAL DYNAMICS DIAMOND STAR HEADLIGHT MODULE 1013 This compact solid-state module turns your headlight into an attention getter Makes your high- or low-beam headlight pulsate during daylight hours; two DOT-compliant settings Built-in photocell ensures that your headlight will only modulate during daylight hours to comply with DOT standards Modulation can easily be turned on and off with the bikes existing high/low beam switch Heads Up Alert feature adds a visual alert to the horns audible alert by modulating for three seconds when the horn is pressed