The JS-49 is a switch actuator designed to be installed with a basic switch. It features a maximum operating force of 18 oz and a minimum release force of 2 oz. The actuator's travel characteristics, when installed with a 1SM1 basic switch, include a maximum pretravel of 0.125 inches, a maximum differential travel of 0.015 inches, and a minimum overtravel of 0.015 inches. Constructed from corrosion-resistant steel, the JS-49 provides a durable and reliable mechanical interface for actuating basic switches in various applications.