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A self-retracting lifeline can be called many different things – a yo-yo, a personal fall limiter, a seat belt, a block, or an SRL. Whatever you call it, (we like SRL) they all have similar mechanics that are part of a safety system for stopping a worker from experiencing a long fall. In this post, we will tell you how an SRL works and a little about the components that make up this life-saving device. These pictures of a demonstration SRL with a clear case show you the inner-working …