Hardwired Smoke Detector with Interconnected

Updated November 5, 2026

Notes: The box is damaged. Condition: Excellent Damaged?: No In Packaging?: Yes Assembly Required?: Yes Star Rating: 0.0 Missing Parts?: No Functional?: Unable to Test UPC: 047871314829 Brand: Kidde Model: 21031482 Title: Hardwired Smoke Detector with Interconnected Experience the next level of fire safety with the Kidde Hardwired Smoke Detector, AA Battery Backup, Interconnectable & LED Warning Lights, model 20SAR. This smoke detector has enhanced sensing technology that reduces false alarms often caused by cooking and sends fast alerts that help give your family more time to get out safely. Plus, it is interconnected so when one alarm sounds, they all do so you never miss an emergency. This alarm offers a modern 5-inch design ideal for all living spaces such as living rooms, hallways, kitchens, & bedrooms. Comprehensively tested and designed to the latest UL standard for safety and reliability, the 5-inch smoke alarm is powered by 120V AC wiring with 2 AA alkaline replaceable backup batteries (included) for continual detection even during outages. Batteries should be replaced every 6 months. When smoke is detected, the red LED light will flash in time with the loud 85-decibel alarm to help you seek safety. A test-hush button allows you to test the battery operations as well as silence nuisance alarms, should they occur. In addition, the detector is self-testing and easy to install with the included twist-and-click mounting bracket. Meets requirements of 9th Edition UL 217 and FCC. Alarm Sensor Type: Photoelectric. Alarm/Detector Features: Battery Back-Up,Hush Button,Tamper Resistant. Alert Type: Siren. Commercial/Residential: Home. Connector/Contact Type: 3-Wire. Fixed or portable: Fixed. Included: Battery Back-Up,Mounting Hardware,Owner's Manual. Power Source: Hardwired. Voltage (V): 120 V. Certifications and Listings: UL Listed. Product Depth (in.): 1.88 in. Product Height (in.): 5 in. Product Width (in.): 5 in. Alarm Sensor Type: Photoelectric. Features: Battery Back-Up. Features: Hush Button. Alert Type: Siren.

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