Ring also doesn't currently offer any additional security accessories, but it plans to add a leak sensor and other devices at some point. And while your Ring security cameras and video doorbells ($250 at Amazon) live in the same app as your Ring Alarm Security Kit, there aren't any direct integrations between them today. I'd like to see something like, "If the Ring Alarm Security Kit's front door sensor notices that the door is opened in Home or Away mode, then tell my Ring Video Doorbell Pro to record automatically" -- even if the Video Doorbell Pro itself hasn't detected motion yet. 
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We set up the base station in our office, the contact sensor on the front door, the keypad on the front table, the motion detector in the hallway, and the range extender in our laundry room. You can add additional motion sensors and contact sensors to the system for additional coverage. We added a couple of sensors to windows on the first floor of our home for added security.
The Nest Guard motion sensor can detect motion within a 90° field of view up to 10 feet away. It also includes tamper detection as well as a proximity sensor (wakes on approach) and will let you know if it’s moved or if someone tries to jam your signal. However, in testing, I found that none of the promised tamper sensors worked. I did not test jamming detection.
The abode Gateway is responsible for communicating with and controlling all connected devices. Compared to Nest Secure, abode offers a wider array of equipment. Unfortunately, their equipment isn’t as modern looking as Nest’s nor do they offer any multi-purpose devices. However, they do sell everything you need to secure your home. Each Gateway can support up to 150 connected devices and up to six IP Streaming Cameras.
The Spotlight Cam Battery has an IP55 waterproof rating, comes in white or black, and measures 4.9 by 2.7 by 2.9 inches (HWD). It has a short removable mounting arm with a ball on the end that can be clamped on to the included mounting bracket. The bracket can be mounted on a wall or upside down on a soffit. There's a setup button on the top of the enclosure and a 160-degree (horizontal) motion sensor on the bottom that covers the battery compartment.
At two months, Arlo’s battery lasted longer than Canary’s. Arlo also sent both an email and push notification encouraging me to charge the camera. I tried to time how long it took to recharge the battery, but it took five hours to reach 87% and then stopped. Even the next day, the camera’s battery did not charge beyond 87%. Also, like Canary, Arlo’s battery life was impacted by activity more than weather. The camera I placed in a lower traffic zone had 37% battery life remaining after two months and several sub-zero days.
You have 2 alarm modes: home and away. Using the app you get to chose which sensors will trip home mode and away mode; to be a little more specific, in the app you can select a sensor and check a box next to away and a box next to home if you want it to trip the alarm even if your alarm is active in “home mode” such as when you’re sleeping at night, where motion sensors inside won’t trip the alarm, but doors or windows opening will do so. You can also select a motion sensor and select a lower sensitivity level in case you have pets. You can do all this from the app even away from home.
Finally, I wouldn’t put too much weight into the Amazon review from 2015. Things have really changed since then, including the Nest app. The Nest app was a little slow going when first launched, but they’ve really improved it and added back features that were initially missing, though found within the Dropcam app, plus added new features like person detection.
We've begun having an ongoing problem with car break-ins in our neighborhood. I wanted to get a security cam to monitor our driveway. I looked into standard cctv and more advanced poe/hd cams with a dedicated computer and HDD, but hesitated due to the complicated nature of the installs. Not that I can't do that, but I really wanted a simpler option. Enter the Ring Floodlight Cam. I purchased one to install in place of the motion floodlight over our driveway. I am pleased.
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