Joann Johnson has joined Brink's Home Security, Irving, Texas, as vice president and controller. Previously, she was vice president of finance and administration at Celion Networks Inc., Richardson, Texas.
Russound, Newmarket, N.H., has hired 24-year marketing and sales veteran Maria Linvill as the company's new trade show manager. Linvill will be responsible for planning, securing and managing Russound's participation in the industry's regional, national and international tradeshows.
Linear LLC, Carlsbad, Calif., has acquired Panamax, Petaluma, Calif., a designer and manufacturer of products for the protection of electronic/electrical equipment from power disturbances. No terms of the purchase were disclosed. Linear is a worldwide supplier of wireless residential security systems, intercoms, garage door operators, gate operators, short and long-range radio remote controls and medical/emergency reporting systems.