On Friday 13 December 2013 11:14 mogga wrote in uk.d-i-y:

On Fri, 13 Dec 2013 11:12:14 -0000, "Brian Gaff"
wrote:

Yes I noticed this.
Maybe they can phone home to let them know the bulb blew?

Brian


How far are they sending a signal and how much does it cost?

The logical thing for a council to do is wait til people report a
street light is out. If no one does then it's not needed.

Without knowing any details, I would not mind betting they form a simple
mesh network - so in the best case, each one only has to reach as far as the
next, or the one after that in the case of single unit failure.

Occasionally one would have a proper uplink.

--
Tim Watts Personal Blog: http://squiddy.blog.dionic.net/

http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage