Home Automation security can include things like: cameras, security systems, detectors (fire, carbon monoxide), pool monitors, motion sensors, baby monitors, and Access Control
SimpliSafe, Ring Security, and Nest Secure meet my requirements for no monthly fees and ability to work with Wi-Fi and Alexa.
My home came with a complete DSC security system. I added some components to make it fully self-monitored with no monthly fees, and no accidental calls to the police.
Completed security projects:
Ring Doorbell adds a motion sensor and video camera around the front door
Smoke Alarms were preinstalled and came with the home
Outdoor Home Security Camera (using Raspberry Pi, MotionEye and Fake Camera Enclosure)
Potential Future Projects:
Carbon Monoxide Detector
Link Smoke Alarms into Security System