SLS™ SELF LEVELING SYSTEM SLS™ SELF LEVELING SYSTEM CONSTANT HIGH CLEANING PERFORMANCES. SLS ™ – mechanical or electronic system allows great cleaning performance by fully adapting brushes with floor unevenness. Applied to: CT231 CT5 CT71 CT51 CT81 CT160 CT110 CT80 CT105 CT15 Benefits The brush pressure with self-levelling and self-adjusting head allows a perfect fit between brush and floor. System available as mechanical, electromechanical or electronic according to machines models.