Best Smoke Detector In 2017 - Reviews & Buyers Guide Top 7 Best Smoke Detectors of 2017 May 11, 2017 / Electronics & Gadgets Shares Contents [ hide] 7. Flexzion Carbon Monoxide Detector + Smoke Fire Alarm - Combo Review 6. First Alert P1010 10-Year Photoelectric Smoke and Fire Alarm Review 5. Universal Security Instruments USI-1209 120-Volt AC/DC Wired-In Ionization Smoke and Fire Alarm Review 4.