Detailed review of Sonoff TH16 and Sonoff POW

A great review of two modules from Itead studio is the Sonoff TH16 automatic temperature control module, and the Sonoff POW power consumption monitoring module. Let's see how they work, what is inside each module, check how they behave if the electricity suddenly goes out, and how useful or useless they are in the absence of the Internet.
Product links:
Sonoff Pow: goo.gl/7oDLsM
Sonoff TH16/sensor: goo.gl/rdSWOR
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