i use old smartphones and alfred app. they all have motion detection, notification, night vision, front/back views, two way communication, video recording to the cloud. i've put them in the windows through out the house, can also set them up inside. it's free and i bought phones for $5-10 on slickdeals.net. but i also live in safe neighborhood where we sometimes forget to lock our garage or house doors and never worry about anything.
previous owners had guardian alarm so we still have control panel just don't subscribe to service. the plaque outside does enough to deter anyone curious.