Attributes . 423 switches the high side of the DC operating voltage to an external load circuit when switched "ON." The flash rate can be specified over a wide range from 1 flash per minute to 600,000 flashes per minute. The duty cycle of the flashing rate is 50%. Load currents to 1 A may be driven with the output. This has internal transient protection devices to assure reliable operation even when driving inductive load circuits such as relays or solenoids. The model is available only in a fixed flash rate version. . Names