Very easy to replace. Previously, my i7 robot could not find a docking station remotely, but when it was nearby it would dock normally. After swapping, the robot finds its way back to the dock, but this sensor is not calibrated properly, the robot doesn't stop and keeps moving all over the top of the base, hitting them everywhere. I noticed that the wiring is significantly longer than the original and needs to be carefully connected to an area that won't cause problems. No way damn this is a…