I used this to replace and older version in which the batteries of the sensors depleted. I was surprised that it works from its battery only. I'm using it already since a week and being winter I expected the battery discharging after 10-15 minutes. But it works well, so I'm really satisfied. Ah and one more thing: the designer of this stuff started to think (not like the other guy who designed my older version) and made the sensors thread of copper. The other has been made of aluminium and that caused the sensors rotting onto the copper valves (because of electrochemical corrosion), making it impossible to remove. So there is no problem with the material selection.
The shipment did not arrive and Ali Express was late in returning the purchase amount and giving it an opportunity
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