The document describes various components of an automotive clamping system: 1) A manual release button is used to unlock the clamp when it reaches its final closing position without an air supply for safety unlocking. 2) A key stone protects housings from heavy loads and absorbs energy from opening and closing movements. 3) An optical sensor has an all-metal body and M12 swivel connector to detect clamp and power pivot positions without needing adjustment for different opening angles.