Featuring a low-profile， contemporary design， the First Alert 10Y Slim Photoelectric Smoke Alarm with 10-Year Battery provides the same protection as a standard smoke alarm while taking up only a fraction of the space. This slim， battery-operated smoke alarm requires no hardwiring for installation， making it an ideal solution for those who want to enhance fire safety without hiring an electrician. It features a built-in 10-year lithium-ion battery that provides continuous power for up to a decade. Equipped with an ultra-reliable photoelectric sensor， the smoke alarm detects smoke from slow-burning， smoldering fires while keeping false alarms to a minimum. A patented smoke entry system further enhances the detector's reliability by providing a direct path to the smoke sensor. The simple twist-lock mounting system installs easily onto a wall or ceiling， while the tamper-resistant locks help prevent removal of the battery to keep the alarm secure. Half as thick as a standard alarm， the smoke detector has a sleek， slim design that blends in seamlessly with most decor. A loud 85-decibel alarm sounds when smoke is detected， and a convenient test/silence button lets you easily check alarm function and mute false alarms.

• Brand Name: First Alert
• Power Type: Battery-Powered
• Sensor Type: Photoelectric
• Product Type: Smoke/Fire Detector
• Packaging Type: Clamshell
• Test and or Reset Button: Yes
• Number in Package: 1 pk
• UL Listed: Yes
• ETL Listed: Yes
• Batteries Included: Yes
• Replaces Ace # 5633177 and Ace # 5619960