Here is a Dark To Light, (ROAM) Monitoring Control Node. These would mount directly on a luminaire so that the luminaire's voltage and current can be monitored. It is also used to monitor things such as dayburning or cycling luminaires.
I believe Seattle is using nodes on their LED lights downtown. Somewhere there is a master control and the rest of the lights, which used to be HPS with individual photocontrols, all come on at the same time now. The lights don't simply run dusk to dawn...they appear to be timed and can also be activated remotely, such as during a parade.
I like regular photocontrols. I did install this in a couple of my lights and it looked weird. Mostly on the 113 because the back end of the 113 where the receptacle is, is narrow.
Here they're using CIMCON controls. See Here. They're controlled by a software managed by Silver Spring, a California-based company. RIDOT and Providence are using them. Pretty ugly controls IMO but they do some crazy $h!t. They have internal watthour meters and GPS technology so the light's location can be tracked for repairs (and I guess if it was stolen lol).
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