Update your semi truck with steady flash rates for lights, with the OTR 2-Prong 10-Lamp Tridon Style Electronic Flasher that ensures you're Ready for the Road Ahead. Due to its straightforward design, this replacement device is able to set a consistent flash rate for lights, creating a controlled pattern that can be seen by other vehicles or pedestrians. Constructed with a multipurpose design to be suitable for everyday driving, alarms, or hazardous situations. FleetPride is your First Click in Heavy Duty.