Arlo Ultra Wireless Residential Security System:
$ 399.99

The latest technology gadget named Arlo Ultra is an easy-to-install home security system consisting of a base station with a built-in siren and up to 10 wireless camera modules with 4K HDR image sensor, wide-angle lens and built-in light. They can last for weeks without recharging, and come with rugged magnetic mounts. They are also weather resistant, so you can place them outside your home.

Compatible with Amazon Alexa, Google Assistant and Samsung SmartThings, it can alert you when your cameras automatically detect the activity, as well as activate the powerful siren or allow you to communicate with emergency services if you need it. The price is for a system with a camera module.