Macurco CM-E1 Security Series Carbon Monoxide CO Gas Detector, 9-32VDC, Residential/Light Commercial Product Overview The Macurco CM-E1 combines innovation with a smooth and easy installation system to provide carbon monoxide detection in residential and commercial office environment. Flush or surface mount options, alarm and trouble relays, and 85 dB buzzer. Main Features Detects Carbon Monoxide (CO) Gas 9-32 VDC input Flush or Surface Mount Enclosure (Sold Separately) Temperature compensation for improved catch performance at critical temperatures Patented Multi-Level Signal Processing (MLSP) for accurate detection of human IR energy over a broad range of temperatures Sensitivity adjustment to configure the detector for normal or hostile environments High-level static and transient protection Exceptional white light immunity Excellent RF immunity Digital signal analysis for consistent detection throughout the coverage pattern