The Yale AL-DC-1A-W Wireless RF White 868 MHz 1000 m Door/Window is a high-quality security device that operates on a wireless frequency of 868 MHz. With a range of 1000 meters, it is suitable for monitoring both doors and windows. The sleek white design and compatibility with universal brands make it a versatile and reliable choice for home security. Backed by a manufacturer warranty of 1 year, this unit offers peace of mind and protection for your property.