The discontinued DEUS 7500 Challenge Course Belay System is designed specifically for challenge courses and zipline tours.
The Skylotec/Deus 7300 is the most recent version. See the new version at: https://highcountryhardware.com/products/skylotec-deus-7300
The Skylotec/Deus 7300 is the most recent version. See the new version at: https://highcountryhardware.com/products/skylotec-deus-7300