Alarm installations and alarms; Alarm sensors; Apparatus for transmitting radio programmes and radio relay messages; Audio amplifiers; Audio speakers; Electrical plugs and sockets; Loudspeaker cabinets; Radios incorporating clocks; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Security alarm controllers; Telecommunications hardware and software for monitoring and alerting remote sensor status via the Internet; Wireless...