The Amazon Echo Dot (3rd Generation) was one of the most popular items purchased on Amazon during the 2019 holiday season. There are a couple of home security options with Alexa that you can try like the Alexa Guard feature, which can be activated in the Alexa app. This feature allows you to get alerts if Alexa detects certain sounds like glass breaking or if your smoke alarm goes off.
You can also use Alexa skills like the Burglar Deterrent skill which will allow you to make it seem like you’re home through sound. Choose the environment you want Alexa to play sounds for, like the kitchen or living room area, and Alexa will make it sound like someone is watching TV or washing the dishes. You can now use Real Time Mode to enable Alexa to choose the right sounds to play based on the time of day. For instance, while it’s daytime, a passerby would hear dogs barking.