What does the condition lever in turboprops control?
Shamelessly quoting from Skybrary: (emphasys mine)


  A Condition Lever is a pilot actuated control which is located within
  the throttle quadrant of a turboprop engine equipped aircraft. It is
  utilised to control some functions of both the propeller and the
  engine. These functions vary from installation to installation.
  
  Functions of the condition lever can include any of the following: 
  
  
  Fuel cut-off.
  Propeller feathering.
  Propeller un-feathering.
  Low idle/high idle selection.
  Propeller speed control.