Kidde RemoteLync Monitor 120V Plug-in Acoustic Detection Device - listens for the sound of a smoke or carbon monoxide alarm and will send an alert to your smart phone, tablet or PC. This monitor is designed to work in conjunction with UL Listed smoke alarms (which produce temporal three alarm patterns) or carbon monoxide alarms (which produce temporal four alarm patterns), manufactured after 1999. Easy to Install - plugs into a single wall outlet with voice prompts and a user-friendly interface for easy set up. Easily connects with your existing wireless router. Device Compatibility - works with iOS and Android smartphones and tablets. Always On - monitors existing smoke and carbon monoxide alarms 24/7 and notifies the homeowner via a mobile app using the homes existing wireless connection.