Linear LLC is a pioneer in engineered radio frequency (RF) products and is a major supplier of wireless residential security systems, access control, CCTV surveillance equipment, intercoms, garage door operators, gate operators, short- and long-range radio remote controls, and medical/emergency reporting systems. In recent years the company, through acquisition, has expanded into a wide range of consumer electronics, including whole house audio/video distribution systems, central vacuum systems, music/communications systems, speaker systems and structured wiring systems.