It’s common for businesses to use alarms, video cameras, and motion sensors for security. Lots of offices use smart locks for access control purposes. Additional sensors for things like smoke, carbon monoxide, or a shattered window can also help keep businesses secure.  Professional monitoring is another common service that businesses use for security. These types of services keep an eye on your business, even when nobody is there. Monitoring services can also call the police or fire department if an incident is detected.