Alarm monitoring systems; Baby monitors; Digital video cameras; Electric door bells; Electronic anti-theft system comprised of a bar code scanner that allows manufacturers to temporarily disable electronic goods during the manufacturing process and allows retailers to enable such goods upon receiving the purchase price for the goods; Electronic device for monitoring and optimizing photovoltaic arrays; Electronic door alarms; Electronic monitors for monitoring flowmeters; Electronic personal emergency response system consisting of a device worn on the body with a button that users push to notify others in the event of an emergency, and a remote unit that dials out on the telephone for help; Electronic warning bells; Fire alarms; Gas alarms; Magnifying peepholes for doors; Metal detectors; Monitoring devices for monitoring battery performance characteristics; Sirens; Sound alarms; Theft alarms; Warning bells
Electrical and Scientific Apparatus