Product details:
Osmolator Nano 3152 Water Level Regulator - Tunze - Water level controller with one sensor for nano aquariums or small aquariums with up to 200 liters (55 gallons). Can be installed in a cabinet filter or directly on the aquarium edge. Electronic eye sensor to monitor water levels. Backup float switch sensor with an optional audible alarm. The optical eye sensor keeps the water level very steady to prevent changing salinity in the aquarium. All functions are clearly displayed by LEDs; safety messages are also indicated by acoustic signals. Ready for installation with 12 V power supply, low-voltage metering pump, 3 m (118in. ) hose, magnet holder for up to 10 mm (3/8") glass thickness and a protective cover for the sensor.