The AutoAqua Smart ATO Lifter pairs a dual optical sensor with an AQUA Lifter pump to automatically top off evaporated water, built for compact tanks that want precise, gentle refilling without a bulky system. Sensor: square dual optical sensor, magnetically coupled, 1/4in thick, works through surfaces up to 1/2in thick, functions in any lighting Pump: AQUA Lifter pump with built-in anti-siphon valve, gradual refill to minimize stress on tank chemistry Safety: Quick Security Technology (QST) gives audible and visual alarms on sensor or pump failure Specs: 100-240VAC input, pump suction height 6.5ft, max flow 3.2 gph (12 lph), max sensor mounting thickness 1/2in, 6.5ft tubing (1/4in RO-compatible), 6ft cable Includes: Smart ATO Lifter controller, power adapter, AQUA Lifter pump with holder, prefilter, 6.5ft tubing.The dual optical sensor is the key reliability feature here — having two sensors means a failed primary sensor doesn't leave the tank unprotected, since the backup catches the fault before it becomes an overflow.
