The dbk+4 ultrasonic double sheet control is a sensor that can identify if two or more sheets are stuck together. With a 3 control input for trigger, Teach-In and external sensitivity setting for the material it can be used on sheet printing machines, assembly machines, folding machines, paper processing machines, labelling and even PVC manufacturing. It has a variant with a 90° angled head for individual installation scenarios, as well as a variant for external M18 receiving transducer. For single and even double sheets, it is a reliable sensor.