{"product_id":"first-alert-brk-9120b-smi100-ac-smoke-detector-hardwired-with-battery-backup-3-pack","title":"First Alert BRK 9120B\/SMI100-AC Smoke Detector – Hardwired with Battery Backup (3-Pack)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe First Alert BRK 9120B\/SMI100-AC is a hardwired smoke detector designed for reliable, round-the-clock protection. It operates on standard 120-volt AC power and includes a built-in 9-volt battery backup to maintain alerting during power outages. An ionization sensor targets smoke from fast-flaming fires, delivering a loud 85 dB alarm to prompt quick awareness throughout the home.\u003c\/p\u003e\n\u003cp\u003eSold as a 3-pack, this model offers practical coverage for essential living areas. The unit emphasizes straightforward maintenance with tamper-resistant locking pins and a single-button silence\/test function, enabling quick checks without compromising safety. The combination of continuous power and backup energy helps ensure that alerts remain active when you need them most, even in challenging conditions.\u003c\/p\u003e\n\n\u003ch2\u003eKey benefits and real-world use\u003c\/h2\u003e\n\u003cp\u003eIn everyday settings, early warning can make a meaningful difference. Hallways, bedrooms, and living spaces benefit from a reliable alert that travels through doors and into adjacent rooms. The loud alarm is designed to be heard clearly, helping occupants respond promptly. While no device can guarantee prevention of fire damage, having a dependable detector increases situational awareness in critical moments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e120-volt AC power with included 9-volt battery backup for continuous operation\u003c\/li\u003e\n  \u003cli\u003eIonization sensing tuned for fast-flaming fires\u003c\/li\u003e\n  \u003cli\u003eTamper-resistant locking pins and a simple single-button silence\/test control\u003c\/li\u003e\n  \u003cli\u003e3-pack so you can outfit multiple rooms for broad coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation, testing, and maintenance tips\u003c\/h2\u003e\n\u003cp\u003eFor a smooth setup, start with power off and verify wiring polarity. Ensure all wire-nut connections are secure before mounting. After installation, use the built-in silence\/test button to confirm the audible alert is functioning as expected. Regular checks help keep the system performing as intended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck wiring polarity (hot\/neutral) and secure all wire nuts\u003c\/li\u003e\n  \u003cli\u003eTest the alarm after installation using the silence\/test button\u003c\/li\u003e\n  \u003cli\u003eConduct routine maintenance as part of your home safety checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy choose this First Alert model\u003c\/h2\u003e\n\u003cp\u003eThis detector combines a straightforward, reliable hardwired setup with a backup power option, reducing the risk of silent alarms during outages. The 3-pack offers practical scalability for multi-room protection, while the compact, tamper-resistant design supports easy mounting in common traffic areas. It’s a balance of practical safety features and user-friendly operation that can fit into many home layouts without complicating maintenance.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the main features of the First Alert BRK 9120B\/SMI100-AC smoke detector?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It uses 120V AC power with a 9V backup battery, an 85 dB alarm, ionization sensing, tamper-resistant pins, and a silence\/test button.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What installation and maintenance steps should I follow?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Verify wiring polarity and secure wire nuts, mount the unit, then test the alarm with the silence\/test button after installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"First Alert","offers":[{"title":"Default Title","offer_id":53086163173487,"sku":"B078HGZ54S","price":71.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0598\/3087\/files\/first-alert-brk-9120b-hardwired-smoke-detector.jpg?v=1778634750","url":"https:\/\/taskholt.com\/products\/first-alert-brk-9120b-smi100-ac-smoke-detector-hardwired-with-battery-backup-3-pack","provider":"TaskHolt","version":"1.0","type":"link"}