9 [ security alarm components, namely, digital alarm control, digital security transmitters for window and door installation, portable panic button transmitters, infrared sensors, infrared transmitters, master alarm control units, alarm transmitters; fire systems, namely, fire alarms, smoke detectors and sprinklers; access control systems, namely, electric locks; closed circuit television systems, namley, video monitors and video cameras; intercoms; central vacuum systems, namely, power heads, hoses, attachments and fittings; music and sound systems, namely, amplifiers, speakers and receivers; telephone systems, namely, answering machines, intercoms and automatic dialers; cable and wiring; silent and audible alarms, namely, anti-intrusion alarms ]