General description The Kidde 10-Year Battery Optical Smoke Alarm with RF Interconnection is designed to provide reliable smoke detection for your home. This advanced smoke alarm utilizes optical sensing technology to quickly detect smoke from smoldering fires, ensuring enhanced safety for you and your family. With a built-in 10-year battery, this smoke alarm offers long-lasting performance without the need for frequent battery replacements. The RF interconnection feature allows multiple alarms to communicate with each other, providing an added layer of safety by alerting you to smoke in different areas of your home. Technical specifications Power source: 10-Year Battery Type: Optical Smoke Alarm Interconnection: RF (Radio Frequency) Dimensions: 5.6 inches (diameter) x 1.5 inches (depth) Weight: 0.75 lbs Other information For more information, you can view the product images and videos.