Acoustic alarms; Alarm bells, electric; Anti-theft alarms, other than for vehicles; Biometric locks; Cover for an electric door bell that attaches to the doorbell to block its use; Electric door bells; Electronic access control systems for interlocking doors; 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; Telephones inc...