Auto Aqua Smart ATO Duo G2 286P - Auto Top Up Water Units

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With its Square Dual-Optical-Sensor which provides precise detection of water level, Smart ATO Duo G2 can automatically replenish your aquarium to maintain a consistent salinity level better than manually and save you from this annoying chore.


Smart ATO Duo G2 is one of the most compact dual-sensor ATO in the world. Equipped with a new generation of the Square Dual-Optical Sensor, simple user-friendly controls, and strong construction, it is easy to use for anyone and anywhere.


The unique QST (Quick Security Technology) can detect sensor or pump failure and avoid overfilling instantly without any complicated settings. With the intuitive LED indicator and the audible alarm, you can know its status at a glance.


The patented Square Dual-Optical Sensor, which significantly reduces the chance of false detection due to waterdrops. It features with strong construction, ultra-resolution, magnet mounting, and easy maintenance. It can be set at any colors of the aquarium and work well in full dark.


The special design of the Smart ATO Duo G2 controller can prevent the connector of the pump and the power adapter from rusted or damaged due to water and ensure users safety and longer product lifetime.


Starting from the first-generation, Smart ATO micro, we invented the first siphon break as a standard equipment for all ATO system, which allows aquarists solve the siphon issue easily.

Incomparable Effectiveness and Efficiency

Smart ATO Duo G2 is a compact auto top off system for any size aquariums. Combined an ATO level sensor and a fail-safe sensor in one pack with a touch controller and integrated with QST (Quick Security Technology), it provides real-time protection against any failure and detects reservoir empty. Smart ATO Duo G2 offers you a safe and economical choice of auto top off!

Overall, this Smart ATO Duo G2 helps maintain the water salinity at a very constant level and save lots of time from refilling the tank manually. Simple is the best way to maintain your aquarium!

Smart ATO Duo G2 (SATO-286P)
  • Power :
    - Input : 100-240 VAC 50-60 Hz - Output : 12 VDC / 1 A - Power Cord Length : 6 ft (180 cm)
  • DC Pump :
    - Head : 8.2 feet (250 cm) - Flow Rate : 74 gph (280 lph) - Pump Cord Length : 6 feet (180 cm)
  • Max. Mounting Thickness :
    - Sensor : 1/2 inch (12.7 mm) - Universal Tube Holder : 1/2 inch (12.7 mm)
  • Water Change Interval :
    - Minimum : 1 hour - Maximum : 99 days
  • Length of Cable between Sensor and Controller : 6 ft (180 cm)
  • Tubing :
    - Length : 6.5 feet (200 cm) - ID : 6.5 mm / OD : 9.0 mm


  • Item No: SATO-286P
  • Barcode: 4714041212433 
  • Weight: 0.62kg
  • Warranty:
  • Dimensions:
  • Suitability:

  • Type: Autofill
  • Mounting: Magnetic sensor

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