Access the menu on the PSD111+: To do this, move the Temperature switch to the off position and hold the up and down buttons simultaneously for 3 seconds, or until a menu appears.
- Press and hold the Up and Down button simultaneously at the CALselection.
- Press Up or Down to select the Calibration amount (-5F to +5Fincrements)
- Once the desired calibration point is reached, press and hold the up and down buttons simultaneously to confirm.