intrusion alarm systems consisting of sensors, control panels and keypads; personal emergency alarm systems consisting of control units, telephone dialers, digital receivers, computers and related software; remote control systems for intrusion and personal emergency alarm systems, said remote control systems consisting of radio transmitters, receivers, control units, computers and related software, wireless intrusion systems and wireless access control systems; telecommunication systems consisting of telephone dialers, digital communicators, digital receivers and related computers and software
Electrical and Scientific Apparatus