The company has a well-earned reputation in the radio frequency (RF) or "wireless" approach to alarm signal transmission and is equally well respected as an innovator in passive infrared (PIR) detection techniques. Linear combines the techniques of passive infrared detection, radio frequency transmission and reception, digital electronics and human engineering to produce highly functional product lines, one of the most extensive in the industry. Tens of millions of the company's world famous radio products have been sold based on a solid record of performance and reliability.
Security products bearing the Linear name are installed residentially and commercially throughout the United States and around the world.