So I've got the Helix9 that is set up for autochart live and i understand that i can do 8 hours of recording on the units memory alone. I see that HB sells a "ZeroLine" sd card for $100.... do I have to buy that in order to be able to store more data? or can i use just a normal SD card? I'm not looking to share my info with anyone or anything, just would like to have more room for data and need to know if it's really necessary to spend the $100 or can i just spend a few bucks on a normal one.
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