I have spent a considerable (!!) amount of time looking into this. I want cover for the side of my house and I have a place where I can mount the camera and run a power lead straight through the wall to a 3 pin socket. Simple you might think. Well issues uncovered fall in to 2 camps:
1) Camera- Plenty of good cameras around for under £100.
- Go for hard wired power as batteries are not up to it, especially in colder weather
- Weatherpoofing to IP66 standard seem readily available
- Go for camera that operates by PIR motion, not pixel distubance, otherwise blowing leaves etc can set it off
- All pictures show neat installation and no wires; reality is most require a hole about of about 2cm (!) to take all cables through such as ethernet connections etc. Solution is to fit a waterproof junction box externally and then run a narrow power cable through. I found only one camera that actually provides purpose designed accessory
- Wifi reception is often weaker than your mobile, a few cameras have a double antenna to help, but I assuming and will budget for a signal booster in the house
- Can't comment on camera range, direction and adjustment but most seem workable
- I want a camera with an internal micro SD card that can store a few days/weeks footage as I don't want to pay a cloud storage subscription (note, allowing for the possibility that the camera will be stolen or the card with evidence removed, I also want free emails with some still pictures, ideally plus mobile phone alerts)
- Micro-SD card needs to be reasonably accssible once you are up at the camera location, many seem to need fiddly extraction
- Instructions for set up are frequently just hopeless, so look for cameras that come with good customer support, there are a few around, the way to find out is read lots of the Amazon feedback reviews etc.
2) Mobile App.- This is where many good options fall down :-(
- Note I have not considered expensive options like NEST and HIVE as I am not going there
- Commonly listed concern is that all mobile "alert apps" are based around a Chinese manufacture's server and the fact that they are connected into your router, so some kind of security risk ... unfortunately there seems to be no way round this, I don't mind them watching my back yard, but need to prevent them gaining access to network and banking etc.
- Some apps are just crap and do what they claim, or they bombard you with alerts, or drain you phone battery and can't be stopped even with foreced closure etc.
- Some camera + mobile apps allow two way communication via a speaker on the camera, one (ring) actually allows you to tap a button on the App and set off a built-in alarm siren on the camera.
After hours trying to find what I wanted I managed to find a UK supplier that I could talk to and a camera + app package that looked like it should be okay.
I purchased this camera from a company called Domar.
Zxtech CloudMini It is sitting in a box and I have yet to start the set up process (which requires MS Explorer, not Edge or Chrome by the way).
I plan to do the set up and then get professional electrician to put the camera up. Fingers crossed it all works, but at least I feel confident that I can "phone a friend" at Domar.
I hope this this helps you guys, must have spent 4-5 hours on research and this is my distilled "wisdom". Easy to buy the wrong product on this one.
If you want the bottom line then wait a few weeks until I have done the full install and app thing and can refine my comments based on my user experience rather than what I have just read.