Duetto 2 ATO – XP Aqua

XP Aqua Duetto2 ATO – Big Performance in a Tiny Footprint

Don’t let the size fool you—the Duetto2 Auto Top-Off System is packed with cutting-edge features designed to keep your aquarium’s water level perfectly stable. Engineered with XP Aqua’s proprietary dual-optical sensor, the Duetto2 houses two ultra-precise level sensors in the world’s smallest ATO sensor unit. Combined with QST (Quick Security Technology) programming, it provides reliable and intelligent overfill protection.

Installation is a breeze—just mount with the included magnetic holder, plug it in, and let the system do the rest. No programming. No calibration. Just seamless, consistent performance.

What’s New in Duetto2:

• Upgraded Controller & Circuitry for enhanced safety and protection

• Refined Sensor Design for longer-lasting durability

• Improved System Intelligence for more accurate water level management

Key Features:

• Compact Dual Sensor: Two optical sensors in one ultra-small housing

• QST Programming: Intelligent fail-safe logic to prevent overfilling

• Dual Overfill Protection: Redundant sensors ensure added safety

• Precise Water Level Control: Maintains consistency in even the most sensitive systems

• Plug-and-Play Setup: Installs in seconds with no programming required

• Works in Complete Darkness: Reliable performance under any lighting conditions

• Strong Magnetic Mount: Easily adjustable and secure on surfaces up to ½” thick

Specifications:

Power Adapter:

• Input: 100–240V AC, 50–60Hz

• Cable Length: 6 ft (180 cm)

DC Pump:

• Max Head Height: 8.2 ft (250 cm)

• Flow Rate: 74 GPH (280 LPH)

• Power: 4.8W @ 12V DC

• Cable Length: 6 ft (180 cm)

Sensor to Controller Cable Length: 6 ft (180 cm)
Max Mounting Thickness: ½” (12.7 mm)

Whether you have a nano reef or a full setup, the Duetto2 ATO delivers high-end functionality in a sleek, compact package—making it one of the smartest, easiest, and most reliable ATO solutions available today.