Cellular phone usage detection system comprising a camera and a mobile phone signal receiving device; Electron capture detectors; Electronic apparatus, namely, motion detectors; Infrared detectors; Metal detectors; Portable video cameras with built-in videocassette recorders; Rearview cameras for vehicles; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Sensors and detector units for use in controlling the actuation and ...