2010/2011/2012  Hot Spot Sprint SPR or Dash  DAS  and Caldera Cima CIM and Lina LIN is indicated by the letter in the serial number. for example. Hot Spot Models: Serial Number  SPR OR DAS-3M2015 the serial number would read SPR OR DAS is model  3 third quarter M year(2010) and 2015 is the unit number made. Serial Number  SPR OR DAS-3N2015 the serial number would read SPR OR DAS is model  3 third quarter N year(2011) and 2015 is the unit number made.  Serial Number  SPR OR DAS-3P2015 the serial number would read SPR OR DAS is model  3 third quarter N year(2012) and 2015 is the unit number made. Caldera Models:..
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