"Proximity detectors" refers to devices or technologies that are designed to sense or detect objects or people that are close or nearby. Full definition
Donald Rodney Psalms 1997 Motorised wheelchair with proximity detectors Collection: The Estate of Donald G. Rodney (iniva.org)
Donald Rodney Psalms (installation view,» 9 Night in Eldorado», South London Gallery) 1997 Motorised wheelchair with proximity detectors Collection: The Estate of Donald G. Rodney (iniva.org)
Unlike Kira I would propose foot - operated controls or proximity detectors instead of Kira's levers. (treehugger.com)