First Alert PRC710 White Battery Photoelectric Smoke & Electrochemical Carbon Monoxide Combination Alarm — 10-Year

The First Alert PRC710 is a battery-powered combination alarm in white that pairs a photoelectric smoke sensor with electrochemical carbon monoxide sensing technology for reliable dual-hazard detection. The photoelectric sensor is optimized to detect larger smoke particles from smoldering fires, helping reduce nuisance alerts, while the electrochemical CO sensor monitors toxic carbon monoxide levels. An 85 decibel alarm activates when smoke or CO concentrations become dangerous. The unit features a sleek, low-profile appearance that blends into walls; note that front cover styling may vary while preserving identical functionality. Complies with all current 10-year legislation in U.S. states and cities where required. The device carries a 10-year limited coverage and includes an end-of-life chirp to notify you when replacement is needed. It is rigorously tested to meet UL safety and reliability standards and is easy to install for faster job-site turnovers. First Alert remains a trusted name in home safety since introducing the very first consumer smoke alarm.