Gramophone burglar alarm, c 1939.
3 4 c m
actual image size: 32cm x 26cm

Gramophone burglar alarm, c 1939.

© Science Museum / Science & Society Picture Library
Household burglar alarm made by Burgot Alarms Ltd, England. When this alarm is tripped by an intruder it dials a telephone number and plays a mesage from the gramophone record.
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