Aquaria Tech informs:

Sentry ATO is the new system developed by Pacific Sun for automated control of the water level in your aquarium. 

Sentry is an intuitive and user-friendly system equipped with an optical sensor for monitoring the water level and a power socket for a top-up pump.

This compact device can be easily concealed; in fact, it can even be hung inside the aquarium cabinet (using the included mounting holes or acrylic bracket).

The box contains:

• Sentry main control unit
• Optical sensor with adjustable acrylic bracket
• DC pump with hose and small hose holder
• Instructions

How does the system work?

The Sentry system's optical sensor accurately monitors the water level in the sump or aquarium, keeping it below the centre of its acrylic cone (optical sensor)

When the water level drops below the optical sensor, the system restores the level to the previous situation (the refilling time can be changed from the configuration button and is set to 5 seconds by default).

This procedure is repeated 20 times. If after 20 cycles the water level does not return to 'normal', an audible alarm will sound and the DC pump will switch off.

Sentry also allows an audible alarm to be set if the top-up water tank is empty and the level in the sump is too high.