86-Type Switch and Outlet Junction Box + Blank Cover Plate

• Universal 86‑type switch box, compatible with 25×19 and 40×19 wiring ducts, featuring a knock-out hole in the center for cable passage.
• Available in two base box heights: a standard 30 mm base box and an extended 50 mm base box.
• The blank cover plate and base box are both offered in standard dimensions—simply print whichever size you need. The blank cover plate can be directly installed onto existing junction boxes in your home.

Instructions:

1. When installing this smart on/off switch into a conventional switch, you’ll need to use the 50 mm high‑profile 86 base box—it won’t fit properly with the standard 35 mm base box, as it would bottom out.

2. Alternatively, you can remove the original mechanical switch entirely, install the smart on/off switch, then simply snap the blank cover plate from the printed file into place.

The cover plate features a concealed screw‑based design with a small opening on the side—when you need to remove the blank panel, simply gently pry open the cover at the designated notch.