The Sick UM18-218126111 is an analogue ultrasonic, straight range sensor with a measuring range of 120–1000mm and an analogue 4-20mA transmission output. It is designed for non-contact, non-destructive detection and measurement of distances, clearances, heights and levels. The sensor is equipped with 12mm threaded stainless steel fittings and a waterproof, corrosion-resistant housing. It provides reliable measurement performance in challenging, harsh industrial environments. The device also has a wide temperature operating range, allowing for changes in ambient temperatures without compromising measurement accuracy.