75031857
Dec 13, 1995
Mar 18, 1997
access control and alarm monitoring systems, comprising, wireless or radio frequency transmitters and wireless or radio frequency receivers, video monitors, control panels, door and gate electrical controllers, magnetic coded card readers, radio frequency proximity card readers, biometric readers, door strikes, electronic lock hardware, modems, computers, computer printers, computer software for use in monitoring alarm systems
Electrical and Scientific Apparatus