Wifi antennas & routers with good penetration across walls

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR10.TRC4.A0.H0.Xlong+distance+wifi+antenna.TRS2&_nkw=long+distance+wifi+antenna&_sacat=0

I'm looking at some of the above: anyone know if the one with 3km distance has good penetration against 2 layers of walls
(each layer of about 15cm thick)?

I'm placing a wifi router with a camera in my car & from my office which is about 500m away, I want to be able to connect
to the camera to monitor the car (from vandals) from my office PC.  There could be 1 to 2 layers of walls in between.

Feel free to recommend any other products.  Don't need encryption, only good distance/penetration
sunhuxAsked:
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Robert OrnelasVP Operations at Cook's ComputerCommented:
Take a look at
https://www.newegg.com/Product/Product.aspx?Item=N82E16833664012&cm_re=ubiquiti_nano_station-_-33-664-012-_-Product 
these are birdges that reach a couple miles and will support cameras with out issue. you put one at each end, point them at one another after they are configured and off you go. Not sure how they work through walls but in my experience the signal does penetrate pretty good. I have just never connected them through walls , i always place them on roofs or poles with long patch cables to the equipment ( cameras, etc.). In my experience you need to boost the signal before its out of range. My mind keeps yelling that this will not not work due to the nature of WIFI, but since i have not tested one of these boosters i can not say they don't work.
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Robert OrnelasVP Operations at Cook's ComputerCommented:
With the way wifi works i would think that a booster would not be suitable for a camera at the distance you need. But as i said i have never worked with these type of boosters so i can not speak as t how they would work for your set up. One thing you could do is if you have an extra cell phone or tablet with data you could use that to monitor. check out this link see if it would work in your situation.
https://www.cnet.com/how-to/turn-your-old-phone-into-a-home-security-camera/
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sunhuxAuthor Commented:
Thanks very much Robert, the cnet link is good.  I'll close this thread in 2 days if I can't think of any further queries.

Depending on where I park (subject to carpark lots availability), the distance can be just 200m away from where
I sit with 1 wall in between so I thought the 3km booster may stand a chance.  If it doesn't, I'll use it for something
else before considering the costlier ubiquiti
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sunhuxAuthor Commented:
I haven't got the item below: what's the purpose of the USB cable?  For powering the booster or for it to link
wireless router? :

https://www.ebay.com/itm/USB-Long-Distance-Range-WiFi-Antenna-Booster-Wireless-Hot-Spot-Indoor-Outdoor/352085383142?hash=item51f9ec97e6:g:QzIAAOSwxu5ZHijV
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Robert OrnelasVP Operations at Cook's ComputerCommented:
Not sure but i image it would be for power as well as connection for configuration.
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