By external mechanical force transmission elements (such as pins, buttons, levers, or rollers) acting on a reed, the device produces instantaneous reed action when the movement reaches the critical point. This allows the reed to move quickly to the on or off position, in conjunction with a fixed spring at the end of the travel. When the force is removed from the drive components, the reed generates a reverse action through the transmission mechanism, resulting in an instantaneous reverse response when the critical point is reached. Features - Color: Black - Material: Plastic - Size: 100.00 x 1.50 x 1.50 cm / 39.30 x 0.59 x 0.59 inch - Typically used in industrial control applications to automatically monitor and indicate when the travel limits of a specific device have been exceeded - In snap action contacts, the actuator movement applies force to an over-center mechanism - This mechanism ensures a rapid change in the contact state when the trip point is reached