@frank1492,

yes, your understanding is correct except that CPEs are not »WiFi range extenders«, but they are specially designed devices for directional long-range links between either a pair of CPEs (in a PtP sceanrio) or a base CPE and multiple other CPEs (in a PtMP scenario).

And it's not enough to just mount the CPE outdoors: you have to carefully align the CPE's antennas to each other's antenna under consideration of a fresnel zone clearance.

They are not suitable to »extend the range« for standard WiFi clients over neither long nor even very short distances.

Also note that the right choice between a CPE210 (operating in the 2.4 GHz) band and a CPE510 (operating in the 5 GHz band) depends on many more parameters you have not posted yet.

Whether a a CPE210 or a CPE510 would perform better in your use case depends on what you want to achieve in what kind of an area (crowded, rural), over what distance (in km please), in what region (US or EU) etc.

Tossi wrote

Then I have the wrong product entirely. All I want to do is boost our home internet out to a building 200 ft away.

No, you have wrong ideas about the range of a WLAN. For consumer WLAN equipment such as smartphones, laptops etc. 200 ft coverage is hardly possible except there is a free line of sight between an access point and the device. If those devices are used indoors, it won't work reliably b/c the consumer devices have much weaker antennas than those used by access points. This is not a technical issue, but ruled by regulatory provisions which do not allow to use the same signal power for a WLAN as being used for cellular networks.

The way to supply a WLAN to a building 200 ft apart is to use a directional link for the backhaul and an omnidirectional AP (360º coverage) for signal distribution locally. This is usually done by using two CPEs (most often CPE510 which operate in the 5 GHz band) for the backhaul and an outdoor or indoor AP with omnidirectional antennas such as EAP110-Outdoor, EAP225-Outdoor or EAP255 (indoor):

200ft is pretty much at the limit of the range of standard consumer devices (smartphones, tablets, laptops). If used indoors, you won't get a stable link due to obstacles like walls etc. which attenuate the signal. It could probably work if the consumer devices are used outdoors at the remote location, but then you would use an omnidirectional outdoor AP such as EAP225-Outdoor:

But this must be tried at the actual location since many environmental parameters will influence the signal quality.

For distances of 100 ft and higher I would use the first scheme above with 2x CPE510 and 1x EAP110-Outdoor (EAP225 if used indoors). We use such schemes to cover large areas on campsites/RV parks; see this story for a sample installation.

For distances of up to ~100 ft I would use the second scheme with 1x EAP225-Outdoor.