The First Alert ATOM Smoke & Fire Detector Alarm P1000 is a reliable and efficient smoke alarm designed for home security. This battery-operated alarm features a photoelectric sensor and operates quietly with an 85db sound rating. With smart home compatibility with Amazon Alexa, it can seamlessly integrate into your existing smart home system. Additionally, the alarm comes with a 10-year manufacturer warranty and is manufactured in China by the trusted brand First Alert. With its sleek white design and compact dimensions of 2 inches in depth and width, this smoke alarm is a practical and essential addition to any home.  This is for 2 brand new units.  Shipping will be $8.00.