Joystick, good info above. Back in post #12 in 2015 I referred to what I called the "sweet spot" or the area above the magnet in which the sensor would operate. I expressed it as an area where you expressed the effect in degrees. Either way, the effect is the same and the RCXP sensors give a wider range of adjustment than many of the RCexl ones. Also, the older RCexl sensors pretty much acted like the RCXP ones, they worked normally. I have not tested any of the newer RCexl sensors in some time now. I hope their issues were resolved over the years.