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Installation steps
1. Open the housing of the key switch, and use a VA Phillips screwdriver to unscrew
the Phillips screw on the front of the housing
2. Insert the key in the key cylinder and move the key to the 1 o’clock position; then
pull on the key cylinder to open the housing and remove the components inside.
3. Now use a size 17 VA socket and a hammer to open the slot for the cable gland on
the bottom of the switch.