2 Way Pull Cord Switch, Manual Automatic Integrated 10 Kg Force Stop Pull Rope Limit Switch for Overhead Crane for Mining: Amazon.com: Industrial & Scientific
ATO Emergency Stop Rope Pull Switch, 1NO 1NC, 6A/380VAC, with Reset Button,Safety Switch for Power Tools, Apply to Belt Conveyor, Crane: Amazon.com: Industrial & Scientific
ABB Jokab Safety Line Strong 2 Safety Rope Pull Switches - A GalcoTV Overview - YouTube