Kangaroo Front Door Security Kit is a simple and affordable DIY home security system with a motion and entry sensor, siren and keypad, and chime and doorbell. It works with Alexa and Google Assistant, offers optional professional monitoring, has long battery life, and easy installation but lacks a camera and some smart home features.

Arlo Home Security System offers comprehensive security with keypads, smartphone apps, remote sirens, and optional professional monitoring. It provides robust home protection, but data privacy may be a concern.

SimpliSafe Home Security System is a reliable and easy-to-use DIY system with a base station, keypad, contact sensor, motion sensor, glass break sensor, panic button, and key fob. It works with Alexa and Google Assistant and offers optional professional monitoring. It has limited smart home integration and camera options.