Like most security systems, Ring Alarm has two armed modes: Home activates the door/window sensors, but leaves the motion sensor turned off. This allows you to walk around inside your secured home without triggering the alarm. Away mode arms all the sensors, so if intruders break in through an entry point that isn’t protected by a sensor, the motion sensor will trigger the alarm when they walk within its range. One motion sensor can do the work of many door/window sensors.
1. Nest can record continiously which eliminates the problem of sleepy security cameras. As far as Ring cameras, Ring Pro offers a pre-buffer. As far as their other cameras, I’ve only tried Ring Spotlight wireless. It’s a battery-powered camera and does not pre-buffer. I believe I heard that the wired version does pre-buffer, but I haven’t personally tried it.
While fairly similar to the Ring Stick Up Cam, the Spotlight Cam is built for the outdoors. That means it comes with a few added security features, such as a siren that you can activate remotely to scare away anyone who triggers its motion detector. The camera is also built with infrared night vision, meaning you’ll be able to check in on your home and your surroundings when you need to the most.
The company’s latest product, the $199 Ring Video Doorbell 2, was released earlier this summer, and it improves upon the original product in a number of ways. It provides higher-resolution video output — 1080p verses the 720p of the original — and makes it easier to recharge the unit’s internal battery if you don’t have it hardwired into your home’s electrical system.
Update 1/24/16 - I have found a fantastic use for the Ring Doorbell and Chime. My mother-in-law, now in her 90s, lives by herself. She has become hard-of-hearing and often does not hear the doorbell. By installing the Ring on her door, she now is bothered much less (solicitors tend to recognize it and don't seem to like it) and when someone rings the bell, the Chime, placed by her favorite chair, gives her a better chance of hearing someone at the door.