Microphones; Access control and alarm monitoring systems; Alarms for the detection of inflammable gases; Baby monitors; Closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones, and recorders; Microphones for communication devices; Remote video monitoring system consisting primarily of a camera and video monitor for recording and transmitting images to a remote location; Remotely-controlled sub-aquatic video camera containing a TV camera, tran...