101 fl oz (3 L) Pet Water Fountain with Radar Sensor and Cover

This fountain holds 3 liters (about 101 fl oz) of water in a clear tank with a hinged lid on top, so dust and hair stay out of the water. A radar sensor on the back detects movement from up to about 39 in (100 cm), and the water starts to flow when your pet comes near. You can also set a timing mode, or switch to a normally-on mode, using the touch controls on the top.

Power comes through a USB-C cable that plugs into a standard 5V USB charger. This is a wired fountain, so keep it near an outlet. The unit is rated IPX8 for water resistance. In the photos it measures roughly 8.5 x 6.5 x 6.1 in (215 x 165 x 155 mm), a compact size that fits on a floor or low shelf. The maker suggests it for pets under 22 lb (10 kg).

Fill the tank with clean water, close the lid and set your preferred mode. Check the water level often, because a pump that runs dry can be damaged, and refill before the tank is empty. Rinse the tank and lid with warm water and mild soap every week or two, and rinse away any film from the pump area so the water keeps flowing smoothly.