Amazon’s smart speakers are not intended as security devices, although they do have some functions that can be useful in this aspect. Since 2021, the Echo and Echo Dotfourth generation and later incorporate a system of ultrasonic motion detection that allows them to capture what is produced within their radius of action. This is useful for setting up routines in the Alexa app, the voice assistant that runs on Amazon devices. For example, turning lights on or off through a home automation system when it detects that someone is entering or leaving a room. These capabilities also allow you alert of the presence of a person when we are not at home.
This motion detection system uses ultrasound which is sound waves too loud to be heard by the human ear. Echo devices emit the ultrasound and then use their microphones to pick up the echoes of these waves. Analyzing them, it is detected if something out of the ordinary is blocking them and causing the echoes, which could be a person or an animal.
In summer, when many leave their habitual residence to spend a few weeks on vacation elsewhere, it can be a tool that gives its users peace of mind fearing that a thief or a squatter could access it.
In order to activate ultrasonic motion detection, you must first make sure that your device is compatible with it. If so, you can configure it from the Alexa app on your phone by following these steps:
- open the app alexa on your phone.
- touch the button Further in the lower right corner of the screen.
- Click on Devices.
- select device Threw out you want to use for motion detection.
- touch device configuration.
- Choose Motion detection.
- Activate the option detect motion.
- touch notifications.
- Activate the option Send notifications when motion is detected.