DV 12V Frequency Relay Adjustable Turn Signal Indicator High Power Fix Motorcycle Flasher Multiple Protection LED Turn Indicator. This LED flasher allows for adjustable frequency of the turn signal blinker, providing flexibility and customization to fit different preferences and needs. With advanced SMD chip technology, this adjustable frequency relay features automatic short circuit protection, overload protection, and reverse polarity protection, ensuring stable operation of the bulbs without any buzzing noise.