Cable tension device for overhead door

A cable tension device, comprising:

• a bracket, the bracket comprising:
• a first side bracket coupled to a first end of the bracket, wherein the first side bracket is perpendicular to the bracket;
• and
• a second side bracket coupled to a second end of the bracket and opposite the first end of the bracket, wherein the second bracket is perpendicular to the bracket, wherein a slot is formed in the first side bracket or the second side bracket;
• a limit switch bracket movably coupled to the first side bracket or the second side bracket;
• a U-shaped arm, wherein a first end of the U-shaped arm is rotatably coupled to the first side bracket and a second end of the U-shaped arm is rotatably coupled to the second side bracket;
• a roller bar coupled to a horizontal member of the U-shaped arm to receive a cable of an overhead door;
• a spring coupled to the first end or to the second end of the U-shaped arm, wherein the spring is under a load to cause the U-shaped arm to rotate away from the bracket to maintain a tension on the cable;
• and
• a limit switch, wherein the limit switch is to generate an electrical signal to an operator of the overhead door when the U-shaped arm is rotated past an operational range, wherein the limit switch is coupled to the limit switch bracket, wherein a first end of the limit switch bracket is coupled to the first end or the second end of the U-shaped arm and a second end of the limit switch bracket is coupled to the slot in the first side bracket or the second side bracket, and a position of the limit switch is set within the slot of the first side bracket or the second side bracket via the limit switch bracket to set a range of angles for rotation of the U-shaped arm that are within the operational range, wherein the range of angles comprises between 20 degrees to 60 degrees.