Under Construction

SimpliSafe system 3 door sensors, 1 motion sensor $285.
They throw in a HD camera if you order within 48 hours.
$15/month for monitoring.

Most push a text message to your phone when they detect something.
Depending on the camera, it may send text alerts when it detects motion, sound, a face (known or unrecognized), or all three.
Some send alerts to multiple people.
Some have an audible alarm
I'd like to see the ability to turn it off remotely - Need to check for that.

YI Home Camera, Security Camera Wireless IP Surveillance Camera with Night Vision Activity Detection Alert Baby Monitor, Remote Monitor with iOS, Android App - Cloud Service Available (2 Pack) : Amazon 4.0 (336) $50

Amazon.com: amazon cloud cam and others

Consumer Reports

Score   Model
84     Nest Cam Indoor NC1102ES 
74     NetgearArlo Pro VMS4130-100NAS
71     D-LinkDCS-2630L
Best home security cameras 2018 - PC Magazine

last updated 10 Oct 2018