The Blind Mark: Plug Mark - The Five Easy Steps

Step 1 Compare the Blind Mark™ locator outside perimeter to the out side of the electrical box you are using. Electrical boxes vary so this will show you where to make your cut.(on the line inside or outside the line).
Step 2 Place Plug Mark™ target, with the arrow pointing up, in electrical box. If you have a multi-gang box you install the targets at each end of the box. Note: Plug Mark and Blind Mark sold separately.
Step 3 With the target is installed in the box you cover the box up with the drywall. Position your drywall in the exact location and fasten it top and bottom.
Step 4 With the arrow on the target locator facing up, pass the locator across the area in which the target is located. The locator will find the target and snap in place. Do not force the locator into position. Hold the sides of the locator and let it jump to final position on its own. If the locator does not look plum rotate right or left till it appears plum. Then you take your pencil and mark around the locator, outlining the box perimeter.
Step 5 Remove the locator from the drywall. Cut out the drywall using your mark as a guide. If you are using a hand saw, keep in mind, the cut on the side where the stud is must be a shallow cut. Multiple tools can then be used (hand or electric) to cut the drywall. Remove the drywall cut out and Plug Mark™ target. Finish screwing down the drywall.
And you’re Done!!!