Alarm installations and alarms; camcorders; cameras; car video recorders; cell phones; cellular phones; cellular telephones; desk or car mounted units incorporating a loudspeaker to allow a telephone handset to be used hands-free; device for testing the function and effectiveness of smoke detectors, carbon monoxide detectors and heat detectors featuring an aerosol spray; devices for hands-free use of mobile phones; digital cameras; digital photo frames; digital video cameras; electrical stora...