Alarm bells, electric; Chargers for electric batteries; Electric door bells; Locks, electric; Monitoring apparatus, electric; Theft prevention installations, electric; Camcorders; Intercommunication apparatus; Sound alarms; Alarms; Anti-theft warning devices; Push buttons for bells; Peepholes (magnifying lenses) for doors; Smoke detectors; Solar batteries; Protection devices for personal use against accidents; Microscopes; Measuring instruments; Buzzers; Tripods for cameras