Leuze Eectronic Ltd. Manufactures Switching Ultrasonic Sensors with Background Suppression .Leuze Eectronic Ltd. Is an ISO 9001 certified company. Leuze Eectronic Ltd. Also offers products like active optoelectronic protective devices, analysis devices and signal devices.Switching Ultrasonic Sensors with Background Suppression are ultrasonic sensors that have the switching behavior highly independent of the surface property. The Switching Ultrasonic Sensors with Background Suppression are distance teachable and have a compact housing. The Switching Ultrasonic Sensors with Background Suppression operate on 20-30 volts DC.