Burglar Detention Alarm

| View Cart ⇗ | Info

Burglar alarms like this one are designed to alert the user to danger. Sensors are connected to a control unit through a low voltage wiring that interacts with a response device.

Source

Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)

Downloads

TIFF (full resolution)

2400×1672, 585.2 KiB

Large GIF

1024×713, 108.4 KiB

Medium GIF

640×445, 56.2 KiB

Small GIF

320×222, 19.7 KiB