The JS-90 is a steel actuator designed by Micro Switch to be paired with a basic switch. When installed with a 1SM1 basic switch, the assembly has a maximum operating force of 10 oz and a minimum release force of 2 oz. Its mechanical travel characteristics include a maximum pretravel of 0.094 inches, a maximum differential travel of 0.015 inches, and a minimum overtravel of 0.015 inches. Constructed from corrosion-resistant steel, this actuator provides a durable and reliable interface for mechanical switch actuation.