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Spectra Precision Laser CB20 Single Control Box

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Rugged Single Control Box for Spectra Precision Laser Automated Grade Control Systems

An economical choice, the Spectra Precision Laser CB20 Single Control Box controls the lift of a blade using proportional time (PT) control output for manpower and material savings. The CB20 Control Box is only used with the Spectra Precision Laser LR30 Laser Receiver.


  • Cab-mounted, automatic control of lift of blade or attachment.
  • Performs simple elevation display to more complex grading jobs requiring automatic elevation blade control.
  • Switch from automatic to manual control with the quick flip of one switch.
  • Super-bright LED grade displays relay blade position to grade in any lighting condition for maximum productivity.
  • Used with Spectra Precision Laser LR30 Grade Display Receiver.

Used on small dozers and compact machines

  • Skid-steer loaders with attachments such as dozer blade, grader blade, box blade, loader bucket for automatic control requiring lift control
  • PT Hydraulic valves