Although, if there is a problem during cleaning, the arc will turn Orange to get your attention.
Roomba Discovery 4210 (not connected)
Roomba 560 (not connected)
Neato XV-11 SW version 3.1.17844, LDS version 2.6.15295, with Pet Brush and Vic's filter (not connected)
Neato Botvac 80 SW version 1.1.97, LDS version 2.6.15295, Board SW version 22753