Alarm installations and alarms; Alarm sensors; Alarms for the detection of inflammable gases; Audio-video receivers; Burglar alarms; Calculators; Cameras; Computer peripherals; Computer operating programs; Data processing equipment, namely, couplers; Electric door bells; Electric door chimes; Electric strikes for remote control of door ingress and egress; Portable media players; Remote controls for projectors; Signal bells; Smoke detectors; Surveying instruments; Television cameras; Transmitters of electronic signals; Vidicons; Alarm monitoring systems; Computer monitors; Computer network server; Cover for an electric door bell that attaches to the doorbell to block its use; Decorative covers for smoke detectors; Electrical and electronic burglar alarms; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Electronic apparatus, namely, motion detectors; Electronic door alarms; Electronic glass break detectors; Fire alarms; Fire and smoke detectors; Geiger counters; Memories for data processing equipment; Motion detectors; Motorcycle charger fault detector; Parts for anti-theft automotive alarms, namely, electronic sensors, remote control transmitters and receivers for remotely operating land vehicles; Personal security alarms; Security alarm controllers; Security and fire alarms; Seismic detectors; Smoke alarms; Sound alarms; Theft alarms; Voltage monitor modules