I am looking at AP placement on my ceiling and trying to determine if it can reach a IoT device in my attic. I am looking at Ubiquiti U7 Pro XGS and found the AP spectrum pattern for this device.
From what I can gather, I should have pretty good coverage I place my wireless plug 9' horizontal and 3' vertical from the AP. The device uses the 2.4GHz band.

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Anyone good at reading spectrum maps? From what I can gather through google, I should have pretty good coverage if my IoT device is 9' horizontal and 3' vertical from the AP. At 9' out and 3' up, the device sits at a diagonal angle of approx 72 degrees off the center vertical axis. Near the 60° to 75° mark, the color is a solid, vibrant orange/red.

Just trying to confirm I am reading this correctly, as I am not an RF engineer and not really sure what the charts describe.