Speco Technologies Focus Free Weatherproof Color Dome Camera HTD8FFI/HTB11FFI/HT7248FFI - Manual (Page 19)

Built in motion detector with adjustable areas of coverage will
Send a signal to an external alarm device when motion is detected.
It also has the ability to mask up to 8 areas of the picture where
Viewing is not desired. Each zone can be independently
programmed via the OSD
This function removes image jitter that is caused by vibrations in
the building and reduces the amount of hard drive space.
The picture could be enlarged by this function in digital.
conditions, or you can have it automatically switch to a B/W
picture in low light conditions
All camera functions are menu driven for easy use.