power flasher

Despite the vast array of solid-state devices now available, the flasher units for car direction indicators are still almost exclusively electro-mechanical. Apart from the obvious objection of unreliability, these units suffer from the problem that the flashing rate is dependent on ambient temperature, battery voltage and load. This latter factor means that if one wishes to wire all four indicators to flash simultaneously as a hazard warning, it is necessary to use a separate flasher unit.