A controller for extensive rigging projects must be flexible in use, comfortable to operate, versatile in its configuration to adapt to the demands of the individual application, and capable of implementing the operation even of complex structures safely and reliably. With a variety of products and options unequalled anywhere in the world, the CHAINMASTER CM-801 series satisfies these demands. Individual controllers, centralized or decentralized group controllers, touring versions, radio-controlled units and interfaces for the CHAINMASTER ProTouch StageOperator or the XYZ Control System, as well as a wide range of accessories and country-specific modifications, round off the portfolio.