biometric locks; electronic access control systems for interlocking doors; padlocks, electronic; electric door bells; peepholes [magnifying lenses] for doors; anti-theft warning apparatus; smoke detectors; batteries, electric; remote control apparatus; deadbolt locks, electric; digital locks; electronic door locks; digital door locks; fingerprint door locks; fingerprint activated electronic locks; electromagnetic locks; magnetic locks; electric locks for bicycles; locks, electric; electric locks for vehicles