Smart ATO Nano G2 (SATO-276D) – Compact Auto Top-Off System

Overview

The Smart ATO Nano G2 (SATO-276D) is an efficient, compact, and reliable automatic top-off (ATO) system designed for small aquariums and nano tanks. Featuring an advanced optical sensor and a built-in diaphragm pump with an anti-siphon valve, it ensures consistent water levels, prevents overfilling, and eliminates siphoning issues.

Key Features

✔ Compact Optical Sensor with Magnetic Mount – Supports glass thickness up to ½ inch (12.7 mm).
✔ Built-in DC Diaphragm Pump – Silent operation with anti-siphon protection.
✔ Plug & Play Setup – No moving parts for hassle-free installation and long-term reliability.
✔ Smart Auto Shut-Off – Prevents overfilling in case of malfunction.
✔ RO Tubing Compatibility – Uses standard ¼-inch RO tubing for easy connection.
✔ Ideal for Nano Tanks & AIO Aquariums – Space-saving design perfect for small setups.

Technical Specifications

Power

• Input: 100-240 VAC, 50-60 Hz
• Output: 12 VDC / 1A
• Power Cable Length: 6 feet (180 cm)

DC Diaphragm Pump (Built-in Anti-Siphon Valve)

• Suction Height: 6.5 feet (200 cm)
• Max Flow: 3.2 GPH (12 LPH)
• Anti-Siphon Pressure: 1 foot (30 cm) (Reservoir water level to tube outlet must be less than 1 foot)

Mounting & Sensor Details

• Max Mounting Thickness:
  • Sensor: ½ inch (12.7 mm)
  • Holder: 0.12-0.39 inch (3-10 mm)
• Sensor Cable Length: 1.5 feet (45 cm)

Tubing

• Length: 6.5 feet (200 cm)
• Inner Diameter (ID): 5/32 inch (4 mm)
• Outer Diameter (OD): ¼ inch (6.4 mm) (Standard RO tubing, compatible with ¼-inch RO connectors)

Recommended Applications

🔹 Perfect for Nano & AIO Aquariums – Keeps water levels stable in small tanks.
🔹 Works with ATO Reservoirs – Compatible with freshwater reservoirs for automatic refilling.
🔹 Ideal for Sumpless Systems – Supports direct tank refills with minimal space usage.
🔹 Great for RO/DI Water Management – Uses ¼-inch RO tubing for easy integration.

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