1 x grade crossing signal circuit board flasher blink rate adjustable UK/US/EU

Price is for 1 Circuit Board flasher with dimmer and flashing rate adjustermake the LED crossing signals flash Alternately   with the "yellow light jumper" on, when power on, the yellow light will be on for 1 second, then both red lights will be on alternately, for UK and EU crossing signals.  with the jumper off, when power on, the 2 lights or 4 lights will flash alternatively, for US crossing signals etc..     crossing signals NOT included    Functions:  when manually power on, the yellow light will be on for 1 second ( optional ), then the 2 red lights will flash alternatively( suitable for LEDs made co...