on release 27, that supports scanning for wifi networks (imp.scanwifinetworks()), the rssi value returned seems to be quite different from other wifi hardware, e.g. usb wifi dongle into a pc. While I wouldn’t expect it to be exactly the same, it should be roughly in the same ballpark, right?
RSSI values are not absolute; also depends on many things like antenna gain, orientation, exact position down to the millimeter, etc. Relative strengths should be comparable, but not absolute.