The Kamoer ATO One 2 is a smart automatic water refill device for aquariums. It is the upgraded version of the ATO One, featuring 2 optical sensors and a pump that detects water shortage in the refill tank.

The ATO One 2 is the standard version with a submersible pump; you only need to install the sensor and the submersible pump, which can be used immediately after activation without any setup.

The sensor is mounted with a magnet, making installation and adjustment convenient.

• Equipped with 2 optical level sensors.
• Blue optical level sensor for monitoring the water level.
• Red optical level sensor to prevent overflow.