Business surveillance systems refer to the various cameras and other equipment that businesses use to monitor their premises. This can include visible cameras, which act as a deterrent to potential criminals, as well as hidden cameras, which can be used to collect evidence in the event of a crime. Surveillance systems can also include motion sensors, which can trigger an alarm if movement is detected outside of normal business hours. Businesses often use a combination of these different types of surveillance systems to create a comprehensive security solution.