FARMINGTON — The University of Maine at Farmington will conduct a test of the Visiplex System, its new public-address system for emergency situations, at 11:45 a.m. Friday.

The test, including a loud tone, will last about a minute, followed by: “Test, test. This is a campus-wide test of the emergency-notification system. This is only a test.”

Those on campus will also see blue strobe lights. This process will be repeated twice.