In making recommendations for the hard wired smoke detectors, our research team came across another alarm system model from the First Alert team. Known as the First Alert SCO5CN Smoke Detector, this is a battery operated model designed to act as both a smoke detector and a carbon monoxide detector alarm system. Since its operations are done via the use of cells, users are assured of the continuous monitoring of CO levels in their homes, even in the event of a power outage. Upon detection of any potential hazard, this device makes use of an 85 decibel siren sound, loud enough to be heard from far distances. There are also indicator lights located on the face of the unit display, and these are responsible for the visual alerting of all users during an emergency. The SCO5CN smoke detector features a photoelectric sensor and an electrochemical Carbon Monoxide sensing technology that work together to help the device effortlessly detect the larger particles often found in a smoldering fire. Its use of batteries means that installation and set up takes a shorter time and doesn’t demand any extra skill or knowledge. You can change your battery quickly when it runs down via the EZ access battery drawer included in the design of this unit. This feature prevents you from obliterating your alarm from the ceiling, and also makes the replacement process simpler. Just like other First Alert products, this smoke detector has been engineered to surpass all the set UL standards concerning the design of smoke detectors. The SCO5CN smoke detector and carbon monoxide detector is one of a kind in our current market.