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New Sensor-Operated Buzzer Alarm in the Huron High School Library, September 1974

New Sensor-Operated Buzzer Alarm in the Huron High School Library, September 1974 image
Published In
Ann Arbor News, September 26, 1974
Caption
Following a "misfire," Pegi Nordby hesitantly makes another try at going through a new alarm-connected gate at Huron High School. The gate is designed to frustrate would-be book thieves. It is part of a system which includes a sensor-operated buzzer alarm, which is set off when someone tried to leave with a library book which has not been checked out. Librarian Fran Greenough watched as Pegi makes a second try at the gate following the false alarm.

A.A. Alarms Systems, 1977

A.A. Alarms Systems, 1977 image

Electronic Alarms Systems, 1975

Electronic Alarms Systems, 1975 image

Sanford Security Service, Inc., 1975

Sanford Security Service, Inc., 1975 image

Sanford Security Service Inc., 1976

Sanford Security Service Inc., 1976 image