Use Instructions

（2）Installation without doorbell wire
1）Installation of expansion bolts and bracket
pre-assembly
If you have installed a doorbell before, you can install
it in the original doorbell location. If you have not
installed a doorbell before, you need to measure the
installation height in advance and reserve space for
easy disassembly and installation
When you choose to install on a rough surface (such
as: cement wall, brick wall, concrete, and wooden
door), first mark the screw hole positions with brackets
attached to the wall, then use tools such as an electric
drill to make holes in the wall or porch, install
expansion bolts, and locate the brackets according to
the marked positions.
When you choose to install on a clean and smooth
surface (such as: glass, marble, and latex surface),
clean it first, and mark the approximate location
before sticking the bracket with 3M adhesive.