Good used condition comes with new mounting back plate. Please note this item is not in the original box Ensure peace of mind with the AICO Ei141RC Smoke Alarm, a reliable detector that offers both mains power and battery backup features. Designed for ionisation detection, this alarm is an essential addition to any home safety plan, with a promise of expiring in 2027, ensuring its longevity and continued protection. The Aico brand is synonymous with quality and trust in the realm of smoke detectors. This particular model is engineered to provide an early warning in the event of a fire, integrating seamlessly into your home's safety infrastructure. With its straightforward installation process, you can swiftly set up a robust defence against the risk of fire.