H2Ocean Compact Auto Top-Up is an ultra-compact easy to mount design using twin optical sensors with a built-in fail safe.
The compact ATO by H2ocean is easy to mount for glass thickness upto 12.5mm using the included magnet mount. With two optical sensors the Compact ATO uses one sensor as the main ATO Level sensor and the second as a failsafe.
Using a Smart Level Sensor, the H2Ocean ATO can protect and detect against malfunction of the sensor or controller and protect against an empty reservoir causing the pump to run dry.
Additionally, to this an internal microchip measures the time taken for the first refill of the sump, if one another occasion the refill takes 6 times longer the Smart ATO will give a visual alert.