- Monitor and authorize entrance and departure of employees, visitors, and other persons to guard against theft and maintain security of premises.

-       - Lock doors and gates of entrances and exits to secure buildings.

-       - Answer alarms and investigate disturbances.

-       -      -  Write reports of daily activities and irregularities, such as equipment or property damage, theft, presence of unauthorized persons, or unusual occurrences.

-       - Patrol industrial or commercial premises to prevent and detect signs of intrusion and ensure security of doors, windows, and gates.

-       - Call police or fire departments in cases of emergency, such as fire or presence of unauthorized persons.

-       - Respond to medical emergencies by administering basic first aid or by obtaining assistance from paramedics.

-       - Circulate among visitors, patrons, or employees to preserve order and protect property.

-       - Warn persons of rule infractions or violations, and apprehend or evict violators from premises, using force when necessary.

-       - Answer telephone calls to take messages, answer questions, and provide information during non-business hours or when switchboard is closed.

-       - Operate detecting devices to screen individuals and prevent passage of prohibited articles into restricted areas.

-      -  Inspect and adjust security systems, equipment, or machinery to ensure operational use and to detect evidence of tampering.

-       - Escort or drive motor vehicle to transport individuals to specified locations or to provide personal protection.

-       - Monitor and adjust controls that regulate building systems, such as air conditioning, furnace, or boiler.