Protect your family from fire and carbon monoxide poisoning with this reliable Nest Protect smoke and carbon monoxide alarm. Features: Dual detection: Sounds the alarm for both smoke and carbon monoxide, keeping you informed of potential dangers. Wired for continuous power: No need to worry about replacing batteries, ensuring uninterrupted protection (requires 120v wiring). (Optional) Works with Nest ecosystem: If you have other Nest devices (sold separately), you can receive alerts and silence alarms remotely for added convenience (Note: This functionality may depend on the compatibility of your other Nest devices). While this model is from 2016, it still provides essential safety features for your home. Smoke and CO detection capabilities generally don't become outdated, and wired models offer a reliable, long-term solution. Reasonable Price: Considering the age of the unit and the availability of a newer model, we're offering this Nest Protect at a significantly discounted price of $75. This represents a substantial saving compared to a brand new unit. Please note: This is a wired model and requires 120v electrical installation. Pricing: One for $75, both for $125