• Model number SA3210;• 2 sensors detect smoke from both smoldering & flaming fires;• Built-in 10-year Li-Ion battery offers continuous power for the life of the alarm;• Engineered to reduce false alarms from cooking smoke or steam;• Loud 85dB alarm;• Installs anywhere with no wiring required;• 10-year limited warranty;• Includes mounting bracket;Length: 8.50"Width: 6.75"Height: 2.25"Note: Due to the existence of lithium batteries, additional shipping charges or restrictions may apply. Shipping restrictions may require a ship method that is limited to GROUND and this may impact time in transit and available delivery locations.;