3M DBI-SALA Smart Lock Self-Retracting Lifeline are our smartest SRLs yet. From reducing nuisance lockups, to simplifying inspections, every detail of the new 3M DBI-SALA Smart Lock Self-Retracting Lifeline is designed with helping workers perform with safety and convenienceUsing advanced motion capture technology, we studied the forces applied to the SRL during typical at-height tasks. This data helped us engineer a new arrest mechanism that can more easily detect the difference between a fall and normal work motion, tailoring a SRL for your work application.