Littelfuse, Inc., has introduced the 59040 Series press-fit reed sensor, the first Firecracker reed sensor from Littelfuse with crush ribs on the capsule that requires no attachment accessories for installation. This magnetically operated sensor is designed to press-fit securely into a 3/8” (9.5mm) diameter hole and offers another sensor option for the competitive reed sensor market. Its enhanced sensitivity allows for a wider air-gap between the sensor and its matching 57040 actuator.