Re: In other news
Which is why you use 3G/4G backup on your router, and why you use UPS on any device that you care about surviving a power outage. CCTV DVRs and cameras should be top of that list.
(And is the Nest PoE-powered or mains? Even if it's mains (stupid), it's not difficult to ensure it runs on a protected circuit, but if it's PoE, you just need to UPS the switch).
Anyone who cares about home/business security can spend £50 on the cheapest of UPS and buy a GSM alerting alarm/camera system (which is the only kind of thing I'd buy anyway... why would you want the alerts from your cameras - literally "someone has cut me off!" - not get sent over an independent connection to warn you personally?
Don't rely on ADT/Yale to come running. Don't rely on your phone line being up. Don't rely on your neighbours to see the burglars or respond to your alarm. Even the police barely respond unless there's proof of a robbery in active progress, just an alarm going off is useless and CCTV? "Yeah, if you can just search that for us and send us anything that's relevant" (I worked with the CCTV in schools for 15 years and have also provided evidence for 3 crimes for neighbour's burglaries etc. - they just don't have time to sit through even YOUR footage, they will ask you to provide it or not bother).
My system is actually a proper system:
- 30-day recording CCTV on all cameras, full res, none of this motion detection junk.
- Wired cameras with blackout / cable-cut detection alerts (even putting a bit of chewing gum over the lens).
- UPS-backed NVR.
- Connection for alerts via email, GSM, etc.
- Smartphone app on my phone, my girlfriend's phone.
- Tablet app on an iPad in work, constantly showing all the cameras all day (just underneath my monitor. After a while, you ignore it all unless something happens, but because it's ALWAYS in line-of-sight you see everything you need to).
- Home burglar alarm is wired internally and alerts via GSM messages with internal battery backup.
Already proved useful in 3 police-reported crimes for my neighbours, numerous "neighbourly" disagreements ("If I catch your kids standing on top of my garden fence again, you're buying me a new one", "But they don't!", "1.28pm today, 12:12pm yesterday, would you like me to send you an MP4? Just because I'm not there doesn't mean I can't see it"), and no end of other minor disputes (my council weren't collecting my rubbish, then they claimed it was "contaminated", then they claimed that my bins were in the wrong place - ALL WRONG!, DHL parcel guy lobs fragile parcel over back-fence and then signs our signature... etc.), as well as my girlfriend "checking the cats were okay" every two seconds. It survives power-cuts (an hour at least, I think, but I've never had it out longer than that in 3 years), it survives cable-cutting, it survives people blocking or obscuring the cameras, and instantly raises enough alerts / suspicion that I'd be on my way home with a friendly call to the police on the way there (which, generally, should gee them up more than just "Oh, someone is burgling an empty house")..
And, strangely, the closest we've come to a problem is the guy who burgled one neighbour, then came back the next week in the same car, drove past my house at 2mph looking intently at my house for a long time, then decided to burgle the other neighbour instead. I'm sure the cameras, infrared floods, hard-wired connections, bell-box, RFID alley gates, etc. had nothing to do with that....
Ironically, all-in the system cost about £300 and a couple of days of cable-running. And you'd be hard pressed to find enough inside to walk out with worth more than that before I could do something, and it'd be much more tricky to do it untraceably.
Hell, even the iPad at work isn't actually mine.