Best Smart Lock

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the "PoE" in the trendnet descript refers to Power over Ethernet - in other words the power is going thru the ethernet cable - makes it easier to send power that way vs having to put a power source, ie a 110V box at each camera. And don't even waste your time thinking about those rechargeable battery power cameras, like Arlo - they claim 6-9 months usage per charge, but what they're not telling you is that quote is good if you're only having the camera transmit on motion events - i prefer 24/7 recording streams

plus, ethernet cable is more reliable and more secure than a wifi signal

The Trendnet PoE port supplies 48V, which the PoE device, in this case the camera, will regulate down to the voltage it needs. The reason the PoE port transmits 48V, the higher the voltage, the smaller the guage the cable has to be to deliver current to the end using device. I learned this when i looked into putting up solar panels at the back of my property - i thought i could put the batteries in the basement but soon found out to deliver the current the panels would be putting out at 12V, i'd need cables as big as my thumb, where as if i built a shed back where the panels were for the batteries and the inverter, i could run much smaller guage wire to deliver 120V to the house
 


 
Interesting. So it sounds like the most difficult part of this implementation is finding a way to get ethernet through your house to everywhere you want a camera, and outside too.

Are the outdoor cameras weatherproof?
 


Yes, that is often the hardest part, running the cables.
For my 4 camera PoE install, I literally drilled a 2" hole in the side of the house. Short piece of PVC conduit through the wall, and a waterproof junction box on the outside.
All sealed against the elements and bugs, inside and out.

As for WiFi security cameras? If any of my friends or coworkers asked me to recommend any, or assist with the install for that, I would walk away.
WiFi increases the attack surface. Something you really, really do not want in your security system.
And the WiFi cameras need power anyway, even if they are outside.
 
it wasn't that difficult but i've done a lot of renovation work. My computer sits on a desk that's recessed into a cut out in the bookcases on one wall, next to the fireplace - for 3 of the cameras i bored a 7/8" hole in the ceiling up into the attic and ran the cable to the 3 cameras installed on the bottom side of my eaves. The other two i bored down thru the floor in the crawl space to run cables to the basement - one camera is on an outside wall at far end of basement by the side entrance, the other camera is in the ceiling of that room that is my home office

if you decide to go with something like the Hikvision cameras, keep something in mind, the 2.8mm lenses have the widest angle FOV, 106 degrees, the more you go up in size, the FOV angle narrows down, ie 4mm lens is, iirc 87 degrees, 6mm is 70 degrees