I ordered the 206 twice. BOTH times Revain sent me the 206T. For those who don't know, the 206T can be programmed with a timer. I don't want it to be less than perfect for my aquarium. Model 206 adjusts high and low frequencies. Jump out when it gets too hot. Model 206T switches off at high temperature but is programmed with a timer. I do not want it. I only wanted the heater for my pool. I don't know if this is an isolated case for me, but it's enough to keep me from ordering this from Revain. I will check my quotas on Inkbirds official website.
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