Carbon Monoxide & Smoke Alarm (New & Unopened) Thank you for viewing. [New & Unopened] This is a home security alarm that detects carbon monoxide (CARBON MONOXIDE) and smoke (SMOKE). It helps prevent CO poisoning and fire disasters. It has an automatic carbon monoxide concentration detection function, and displays a real-time LED concentration value with a 90dB alarm sound. For camping, car camping, and home safety measures. [Product Details] Product Name: HOME SECURITY ALARM (Carbon Monoxide & Smoke Alarm) Alarm Sound: 90DB High tone alarm Display: Real-time LED concentration value display Condition: New and unopened Included items: All items in the outer box in the photo. [Shipping] We will carefully pack and ship via anonymous delivery.