2002-2005  Caldera OasisI and II Model TRI OR TOB TRI OR TOB2 and Hot Spot Trinidad  Model TRI and Tobago Model TOB a  is indicated by the letter in the serial number. for example. Caldera Models Serial Number  OAI OR OAI2 or TRI or TOB2-3D2015 the serial number would read TRI OR TOB is model  3 third quarter D year(2002) and 2015 is the unit number made. Serial Number  OAI OR OAI2-3G2015 the serial number would read TRI OR TOB is model  3 third quarter E year(2003) and 2015 is the unit number made. Serial Number  OAI OR OAI2-3F2015 the serial number would read TRI OR TOB is model  3 third quarter F year(2004) and 2015 is the unit number made. Serial Number  OAI OR OAI2-3G2015 ..
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