Intercoms; Loudspeakers; Pagers; Access control and alarm monitoring systems; Biometric fingerprint door locks; Body armor; Electric door chimes; Electronic devices for assisting care giving for seniors or people needing assistance comprised of sensors for determining status of person and apparatus for sending electronic alerts to care givers; Infrared sensors; Leak detecting device for water supplied home appliances consisting of water sensor, control unit with audible alarm and water valves...