USI AMICH3511SC 3-in-1 Smoke, Fire and Carbon Monoxide Hallway Alarm
Universal Security Instruments Hardwired 10 Year Tamper Proof Permanent Power Sealed Battery 3-in-1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm, Model MIC1509S,white - Amazon.com
Universal Security Instruments Part # MIC1509S - 3-In-1 Smoke Fire And Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence - Co Detectors - Home Depot Pro
Universal Security Instruments Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com