Osmolator Smart ATO RO Save on filter and resin! The Smart ATO RO is a device for automatically and reliably filling your RO or RO / DI reverse osmosis water tank. As soon as the water level reaches the low level sensor of the tank, filling starts automatically to fill the tank, until the high level sensor is reached. The Smart ATO RO helps prevent fluctuations in the TDS in your tank and ensures that you always have good quality water for your aquariums. No more worrying about turning off your RO or RO / DI system, as the Smart ATO RO system is equipped with two precise dual sensors as well as a float switch, providing optimal protection against accidental overflows. Dual magnetically mounted sensors allow you to effortlessly place them in various locations around your tank, and even easily move them to another tank. Clever and simple The Smart ATO RO's touch controller indicates operating status, and built-in Quick Security Technology (QST) provides real-time protection against any failure. No technical vocabulary or complex menu either, the Smart ATO RO is very easy to use and is equipped with an audible alarm and an LED indicator informing you of what is happening in your tank. Small and compact Dual optical sensors in a tiny module provide dual protection which is ideal for small and large tanks. The built-in magnetic holder has no moving parts that could break down. Accurate detection helps maintain the stability of your aquarium. Reliable and durable All the elements used are of high quality and are included in the set to allow you to install the system in a few minutes, while ensuring high reliability.