No, the sensors in the pit stop are predicting when the tyre are tightened.
For example in normal condition: If the tyres are all fastened the sensors will show green lights AFTER its tightened.
But In some teams what I understand from the team principals quote that the sensors are active and automated and they predict for example the tyres being tightened 0.25 sec BEFORE it's actually done. That's automated and that's why they are able to do pitstops in 1.8 sec.
So the sensors should not be active it should be passive like on and off
In normal conditions the humans who relase the jack and the drivers need 0.25 sec to react, but that seconds are shaved off by the sensors predicting it early. Which according to FIA is recipe for disaster and against the rules.
And it's no where in the grey zone like DAS or flex wings