Do these record to the cloud or an NVR?

The Arlo site says no subscription fee for five or less cameras for remote access and recording. But I guess you are correct, the LTE would have to have a charge.

Cloud

[Link: storagereview.com]

Mention of monthly or yearly subscriptions. No idea what the different levels of plans gives you as their website is complete shit.

I've been using the Arlo system for a while and it's been pretty good so far. I like the HD recording, night vision and that I get alerts on my smartphone or tablet for the motion sensor. It's also wireless so I can easily move the cameras around and keep the angles I want covered.

Can the video from these be pulled into a control system like Elan, Crestron, etc?

no, no api

Short answer is no, and stay away from these, they suck.

Long answer, I came across a brand new set of 3 cameras and the Arlo bridge very cheap ($200). I put them at the river place, because running wire and power was not something I wanted to do. What I finally learned (none of this is clear on the Arlo site) is first, the bridge is required. The cameras are not wifi. They have their own RF system, similar to zwave. Second thing I learned, the cameras don't detect motion the same way typical cameras do. They have proximity sensors on them. So no motion, the whole thing shuts down except for the proximity sensor. When motion is detected, the camera kicks on and transmits to the bridge that is wired to the router. You can log in from the ap and turn on the cameras for live video. But it's slow to connect. Night vision is probably 10' at best. And the biggest problem is battery life. A friend that has these lives on about 10 acres and has no road or neighbor in camera range. His batteries have been running since January first and he has 80% left. I put mine in about 2 weeks ago, one camera sees section of a gravel road that has a few cars a day during the week and a lot on the weekend. Two cameras catch parts of the river and on weekend days it's full of kayaks and tubers. Then there are my kids running around the yard all day. My batteries are around 60% already.

Arlo is good. We liked the speak&hear thru the cam feature and night vision is great too. But we can get almost the same feature with a lesser price through Canary cameras. Arlo's battery will need little improvements too. Upon comparing, I regret I never learned about Canary sooner!! There should be further explanation that can shed some light.