Had to look it up. Is it legal in all states? How much?
This is going to open a can of worms (Oil Thread?). I have a strong resistance to headlight modulators. Have heard of too many instances when a driver, at a quick glance, thought the rider was flashing to say "go ahead".
Can have the same effect with flashing rear lights. I have a Bright Ass Light on the "flash 5 fast one time" setting. But, I was behind a GW withing blinking rear lights and integrated turn signal/brake lights. Couldn't tell what the heck he was going to do when he had on both brakes and turn.