The Nest Protect Smoke CO Alarm is a reliable and high-quality home safety device manufactured by Nest in 2018. This wired alarm is designed to provide protection against smoke and carbon monoxide, ensuring the safety of you and your family. With a sealed expiration date of 21/2028, you can rest assured that your home is secure for years to come. The Nest Protect Pro Wired model offers peace of mind knowing that your home is safeguarded against potential threats.