Cat. No. Used-26112-HWE-1
The Rollei Master Control Unit is specific to the 6008 Integral and 6008E cameras. This item allows certain basic camera settings to be varied and transmitted to the camera as desired. It also serves as a remote control and can trigger the camera from a distance.
The Master Control Unit can be fitted to the shutter speed dial in place of the Action Grip or mounted on an accessory bracket or tripod. For remote control operation, it can be connected to the camera with an extension cable.
Here's a list of cool things you can do with it.