For large homes, you will need to figure out the best place for the base station so that it's not too far away from the cameras. Even though they use the 2.4GHz frequency band, which helps with longer distance transmission, factors in your home, such as thick walls and appliances can block or interfere with the signal strength. You might need something like an Ethernet over powerline adapter in order to connect the base station to your router if you want to place the base away from your router and closer to your cameras.
The cameras record video based on motion, using a passive infrared (PIR) sensor that gets activated once it notices temperature changes in its 130-degree field of view from humans and animals. Once motion is detected, it then starts recording video for 10 seconds (though you can change the frequency and length of the recording in the settings through the Web site or app), and this video is then saved to Netgear's storage server on the Internet.
This means that the cameras themselves don't have an SD card in them to store recordings, and it also means that you don't need to set up any local storage on your home network for those recordings. The recordings are accessible from anywhere you have an Internet connection to view them.
However, it also means that you have to sign up to a plan in order to use the Netgear server. Apart from the free, default plan, which offers 200MB (or 7 days worth of recordings, whichever comes first), you'll have to pay on a per month or per year basis for more storage and the ability to record from more cameras.
An email alert can be sent to you whenever a new video is captured, and it lets you see a screenshot from the video. A link to download the video directly is provided in that email alert, and we found the file size to generally be around the 500KB mark, allowing files to be viewed easily on mobile devices (they are in MP4 format). You could also log in to your Arlo account using the Web site, or log in to the phone app in order to see all recorded videos.
It's important to delete recordings from your Netgear storage space so that new recordings can continue to be stored.
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