The one in the OP has a different collector. Presumably they're sampling for explosives/radioactive matter/ ...?
Of course it would be a great way to hide something like license plate cameras, in plain sight, with the assumption that they're air-quality sampling systems.
As someone else pointed out, wouldn't these very quickly get stolen?
Of course it would be a great way to hide something like license plate cameras, in plain sight, with the assumption that they're air-quality sampling systems.
As someone else pointed out, wouldn't these very quickly get stolen?
OT: Couldn't help but chuckle at http://www.hi-q.net/products/size-selective-particulate-samp... with the juxtaposition of the ISO9001 quality mark and the forgotten "lorem ipsum" placeholder text ...