Yes - regular unlimited data simcard and a regular unlocked 4g router is enough for older kit - not sure how it might manage with a full run of 8mp cameras on the latest nvr’s though - imagine it’ll still be fine, as you don’t actually get 8mp worth of image being sent to your phone screen.
The remote site I have is on the top of a mountain in wales. It’s using a regular 4g router with a direct connection to the NVR via standard network cable. There’s enough bandwidth that the church can also livestream services via YouTube.
It’s a K series NVR with 8 x cameras, mostly 2-4 mp, and all load up quickly on the hikvision app in both basic and hd. Playback is also easy.
You might have to activate the sim in a phone first, and then transfer it to your router.
Run a site survey through the national map checkers to see who has the strongest coverage.
Don’t use Three. They promise the world and deliver a Birmingham back alley if you’re lucky. Constant disconnections, routers failing, poor signal.
Vodafone on the site in question has performed flawlessly. It’s been running nearly two years - haven’t ever even needed to restart the router. At the time we took out the deal it was about £27 a month unlimited.
Currently they have an unlimited data sim with a max download of 100mbps at £33 a month inclusive. If it’s a private customer deals can be had via cashback sites to improve the offer further.
I’d also consider the other big names - but just to stress again - three is rubbish. (I also put a Three 5g router into another church in a high signal area, and that kept falling over too).
You can also get dedicated 4g/5g routers as part of a package deal (make sure they’re not wireless only and have rj45 connections on them) - but I preferred the unlocked router so that I could change the card at any time if needed (although so far after the three debacle Vodafone has been perfect)