1. It monitors the kitchen for dangerous gasses and if it detects a potentially explosive amount of CO/Smoke, it will sound the alarm and immediately send a notification to your smartphone---When Smoke Alarm work with Multifunctional Gateway (CA1001) together. 2. It works with battery, no need wire. 3. Note: - This fire alarm will work only when it is matched with new version of multi-functional gateway, so if you do not have multi-functional gateway, pls choose the Multifunctional Gateway (CA1001) together, tks.