[Renzo Mischianti]’s friend has to keep a water tank topped up ... with a solar-powered sensor that communicates over LoRa, and a controller that receives the water level readings and powers ...

This Amazon deal is for a three-pack of sensors, but the Govee smart leak detector system is capable of supporting up to ten ...

Tank level sensor, Float level switch, Fluid level sensor, Level controller, Level gauge, Level indicator, Level probe, Level sensor, Level system, Level transmitter, Liquid level sensor, Oil level ...