The QS18 clear object sensor was designed with coaxial optics to detect the presence of both clear and mirror-like targets. It delivers a 400-microsecond response time, universal housing with 18-mm threaded lens, an IP67 rating for harsh environments and an accurate ClearTracking algorithm that compensates automatically for the effects of dust and ambient temperature changes. The sensor is available with IO-Link communication for simplified wiring, installation, preventive maintenance and sensor backup.