• Model number SA320CN;• 2 sensors detect smoke from both smoldering & flaming fires;• Engineered to reduce false alarms from cooking smoke or steam;• Loud 85dB alarm is designed to be heard easily;• Single test/silence button for simple operation;• Battery-powered fire detector installs anywhere with no wiring required;• 10-year limited warranty;• Includes 2 AA batteries & mounting bracket;Length: 8.50"Width: 6.75"Height: 3.25"