BEA DK-12 is a presence detector for automatic doors that provides a 6 x 4 feet protection zone, making it ideal for use in various applications such as commercial buildings, hospitals, and warehouses. It features automatic pattern adjustment, allowing for easy installation and adaptability to different environments. The DK-12 is immune to electrical and radio frequency interference, ensuring reliable operation even in challenging conditions. Additionally, it has a maximum presence detection time adjustable from 30 seconds to 25 minutes, providing flexibility for different usage scenarios.