File:Borough Hall 45 tunnel vc.jpg

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Description Dual-mode PIR/Microwave and long range PIR motion detection sensors protect this area from intrusion. The cold lights from the tunnel are appealing, too. Securing these open areas was an enjoyable project, I suspect, using modern tech.
Date
Source Borough Hall station and switch
Author Billie Grace Ward from New York, USA

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w:en:Creative Commons
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by wwward0 at https://flickr.com/photos/15802578@N00/29894364403. It was reviewed on 14 August 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

14 August 2017

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Date/TimeThumbnailDimensionsUserComment
current09:29, 14 August 2017Thumbnail for version as of 09:29, 14 August 20175,533 × 3,689 (10.26 MB)Vcohen (talk | contribs)Transferred from Flickr via Flickr2Commons

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