Protect your family with the Kidde Hardwired Smoke Detector for Home, 10-Year Battery Backup, Interconnectable, LED Notification, 3-Pack, model 20SA10. This modern smoke detector alarm features advanced sensing technology to reduce false alarms caused by cooking. Today’s fires burn faster and hotter than ever before, so you need reliable fire safety protection. Fast alarm sound alerts help your loved ones get to safety quicker, giving you peace of mind. 3 LED lights— green = normal operation, amber = operating error, red = smoke detected—alert you immediately for smoke detected and assure you that the alarm is working properly. This detector connects to other Kidde alarms, so when one sounds, they all do. With up to 3x more precise smoke detection, you can depend on Kidde. This self-testing smoke alarm is easy to install and ideal for living rooms, hallways, kitchens, & bedrooms, because smoke and carbon monoxide detectors should be on every level of your home. Tested to meet the latest UL standards to safeguard your home from smoke hazards. 29% faster average smoke detection based on internal testing of smoldering wood fires for Kidde 9th Edition vs. leading competitor 8th Edition product In terms of consistency and range of obscuration rate, based on internal testing for Kidde 9th Edition vs. leading competitor 8th Edition products. When compared to prior Kidde generations of smoke alarms. Different models offer different interconnection options and requirements. Check the User Guide for more info.