2002-2004  Hot Spot SLXtra Model W is indicated by the letter in the serial number. for example. Serial Number  W-3C2015 the serial number would read W is model  3 third quarter D year(2001) and 2015 is the unit number made. Serial Number  W-3D2015 the serial number would read W is model  3 third quarter E year(2002) and 2015 is the unit number made.   Specifications ..
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