A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.