Question 1

How does your wireless device know which one of these to connect to?

Accepted Answer

You have to understand that this is above consumer grade equipment.  This utilized the UniFi controller, and works under the WiFi roaming concept.  Think of it like your cellular phone, when you travel from point A to point B over any long distance, you clearly move from one Cell tower to another, seamlessly.  This is the same concept, and is part of the WiFi standards.  UniFi devices are managed by a single controller, therefore you only create 1 set of settings, not one for each access point.  The controller then passes those settings down to each access point that has been adopted in to the network, so they have the same SSIDs.  The 802.11 accounts for moving from one access point to another using the roaming standards.

Question 2

If I buy more than one do I just need one connected to the wired network, if not will leaving one unwired degrade performance?

Accepted Answer

These are not repeaters, so no, it will not downgrade performance to have one non-wired.  This is why using MESH networking is good.

Question 3

Goal: improve rv park wifi connectivity with a private lan in trailer. can this be setup and connected to the wan port of a typical wireless router?

Accepted Answer

There are probably many ways to do this. The one I used uses a Ubiquiti NanoStation locoM2 and a  Ubiquiti airGateway. The NanoStation receives the parks' WiFi and the airGateway re-broadcasts it within the RV where all your devices can connect to it privately. Search for a blog titled "Private RV Wi-Fi and Making a Better Park Connection for Under $100" for detailed configuration instructions. Works perfectly!

Question 4

Can i use thin electrical wiring to power the ap with the injector injector?  if so, what pins do i punch down into a keystone?   thanks

Accepted Answer

I don't know what you are trying to do but this AP comes with a Power over Ethernet injector. You run a cat5 from your switch/router to the injector, which has a standard 3 prong plug that you plug into an outlet, and then run a cat5 from the output to the AP. That is the only safe and effective way to do this

ASIN	B01N9FIELY
Antenna Location	Home
Best Sellers Rank	#110 in Computer Networking Wireless Access Points #150 in Whole Home & Mesh Wi-Fi Systems
Brand	Ubiquiti Networks
Built-In Media	Part
Color	White
Compatible Devices	iPhone
Connectivity Protocol	wi-fi
Connectivity Technology	Wi-Fi
Control Method	App
Controller Type	android, ios, vera
Coverage	Indoor/outdoor coverage with potential for enhanced coverage with external antennas
Customer Reviews	4.6 4.6 out of 5 stars (1,565)
Data Transfer Rate	1167 megabits_per_second
Frequency	5 GHz
Frequency Band Class	Single-Band
Global Trade Identification Number	00810354025594
Item Dimensions L x W x H	1"L x 1"W x 1"H
Item Type Name	Ubiquiti UniFi AP,AC Mesh
Item Weight	5.4 ounces
LAN Port Bandwidth	Gigabit
Manufacturer	Ubiquiti
Maximum Upstream Data Transfer Rate	1300 megabits_per_second
Mfr Part Number	UAP-AC-M
Model Name	UAP-AC-M
Model Number	UAP-AC-M
Number of Ports	2
Operating System	Linux, Mac OS X v10.4 Tiger, Windows XP Home Edition Service Pack 2
Other Special Features of the Product	Access Point Mode
Router Network Type	wireless
Security Protocol	WEP, WPA-PSK, WPS
UPC	810354025594
Unit Count	1 Count
Voltage	24 volts
Warranty Description	Year
Wi-Fi Generation	Wi-Fi 5
Wireless Compability	802.11a/b/g/n

Ubiquiti UAP-AC-M-US Unifi Mesh Access Point, White

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