WPS-4000
WPS-4000 | |
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Company | Whelen Engineering |
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The WPS-4000 Series is a line of electronic sirens produced by Whelen Engineering. It comes in two models, the WPS4003 and WPS4004, which look exactly they same. The only difference between the two models is that one has three speaker dirvers while the other has four, which the lat number of the models stands for.