First Alert Precision Detection 10-year Battery Smoke& Carbon Monoxide Alarm 2pk

Retail $79.99 Features: First Alert's Precision Detection Advanced Sensing Technology Voice & Location Alerts for Danger and Helps Escape Safely Provides Reliable 2-in-1 Protection Against Both Smoke and Carbon Monoxide Slim Profile Design is Half The Depth of a Standard Alarm 10-Year Sealed Battery, End-Of-Life Warnings to Replacement I have several packs. Most are unopened but some are opened and confirmed new