This Tech Tips video goes over how to change the handing for the Command Access ET27 Series
Step 1: Insert a flathead screwdriver into the pin in back.
Step 2: Push up on the flathead screwdriver.
Step 3: While pushing up on the screwdriver, grab the pin and remove it.
Step 4: Rotate the lever 180 degrees and insert the pin.
Step 5: Ensure the pin is fully inserted and verify that the lever is securely locked on the desired side.