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The First Alert CO511B Wireless Interconnected Carbon Monoxide Alarm with Voice and Location detects elevated carbon monoxide levels and can work with compatible models to create a wireless alert system throughout your home. Designed for those who want a comprehensive detection system without hiring an electrician this battery-operated carbon monoxide detector is an ideal solution. Wireless technology interconnects the detector with other compatible First Alert wireless-enabled alarms sold separately in your home to create a unified safety network. The alarms communicate with each other to alert you when there is a problem across the house in a different room or on a different floor. The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources including faulty fuel-burning appliances. This carbon monoxide detector features a voice alarm that studies have shown to wake up children better than standard alarms. It can be programmed to announce which part of the home is experiencing heightened CO levels.