The E3FC-DN23 is an advanced level Cylindrical photoelectric sensor from Omron. It is designed to detect the absence of an object, an object of a certain size and/or a color-coded object. It is a diffuse-reflective type sensor with an adjustable background suppression feature. The sensor also has selectable light-on/dark-on output, making it suitable for a variety of applications such as presence-detection, size-counting, color-detection and more. This sensor also has a long sensing distance and an adjustable sensing frequency, allowing for precise and accurate detection of objects. This model is available in two sizes and is IP67 rated, making it ideal for use in industrial and outdoor applications.