Monitoring the temperature of water

  • I'd like to monitor the temperature of an indoor swimming pool water - much in the same way the Shelly H&T device does using a battery.

    The UNI seems like the way to go as it doesn't require mains voltage to operate.

    Has anybody managed this before - and does the UNI + water temperature probe work in the same way as the H&T by only connecting to Shelly Cloud and saving new temperature value when a change is detected over X degrees? Or will the battery life of a UNI be poor as always powered on and connected to the cloud?

  • You’ll need a BIG storage battery if you intend to power a Shelly UNI with! Do some math calculations for yourself: The UNI need approximately 1W at 24/7 hours…

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  • I'd like to monitor the temperature of an indoor swimming pool water

    Hi, I am onto something similar: I need to monitor water temperature in a steel grazing barrel and the trough to power on/off the
    aquarium heaters I have installed and hooked up to a Shelly Plus 1PM with a Shelly Plus Add-on.
    The Add-on can work with up to five DS18B20, I have ordered watertight DS18B20's with silicone cables and will see if that works.
    I am also thinking about monitoring the barrel water level, thgoebel brought me here to the "unis" :-)

    The H&T runs with 4 AAA batteries and has 2 sensors extra to the Microcontroller (I guess they will not use the Microcontroller temperature, or?)

    Have you checked your H&T's, if you lift up/remove the small PCB on the backside I remeber there are some pins, maybe you could check if there is a way to hook up

    the 3 cables of a watertight DS18B20 somehow (I have no H&T right here at hand, sry)?