I have been enjoying my S50 for several months and now considering adding an S30 Pro to my arsenal.  However I am located in an area susceptible to serious dew conditions so a dew heater is a necessity.  When reading all the S30 Pro descriptions on the various reseller websites (I presume this is provided by ZWO to the resellers), I don't see any mention of a built in dew heater.  Can anyone confirm for me if the S30 Pro has a built in dew heater or will I need to buy an external wrap heater for it?

thank you