Pool water temperature sensors are tiny little devices that almost act like a weather reporter for your pool. The sensor stays underwater and tells you warm or cold—just no big words: just a friend telling you, “Ah, just right for a swim!” or “Brrr! Maybe you want to wait for it to warm up.”
The temperature sensor floats in the pool, noting the water temperature with its special sensors. Then there is an inner component that feels the physical changes—the water temperature could be a warm joy or an icy frown. The sensors then calculate the temperature, transmitting that information, maybe wirelessly, onto a display on the deck of the pool, onto your mobile phone, or right into a control panel. The guessing game is over, and no more dipping your toes in for a rough estimate.
For one, it gives you that comfortable feeling without the “Whoa! That’s too cold!” effect just before the plunge. For another, it lets you know when a heater is in the pool; it talks to that heater so it can heat whenever it needs, conserving energy in the process. And by the way, it spies for the parents.
So the next time you are lounging around the refreshing pool, catch a glinted reflection from the little gadget floating around. It is a whole lot more than just another gadget—it is the reason for that refreshing swim. Pretty cool, huh?
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