Carbon dioxide detectors; Decorative covers for smoke detectors; Electronic apparatus, namely, motion detectors; Electronic components in the nature of infrared detectors for use in further manufacture; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Gas detectors for detecting the presence of gas; Infrared detectors; Metal detectors; Metal detectors for industrial or military purposes; Radar detectors; Radiation detectors; Scientific instru...