A solid-state magnetic latch solenoid controller which is a multi-terminal device that includes an edge (slope) detector, an adjustable one-shot pulse generator, an input status detector, two or more selectable gate drivers and output powerful MOSFETs. The controller is an extremely low-power consumption device. There is virtually no power consumption (from 1-10 uA) from an internal power source or an external source of energy during either normally closed or open stages. This maintains battery voltage and hence output condition for years. A noticeable amount of power consumed only during the transitional cycles from the open to the closed and vice versa.