Hydros Water Level Sensor

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Hydros Water Level Sensor

  • Use as High or Low Level Sensor
  • No Moving Parts
  • Magnetic Attachment 
  • IP65-rating (dust-tight and protected from water spray at any angle)
  • Plugs into a Sense Port on the HYDROS Controller 
  • No additional power cord is required.

The HYDROS Water Level Sensor is an optical sensor you can use for a variety of aquarium applications, such as sensing when your tank needs to be topped off or to detect when a dosing container needs a refill. The optical eye is magnetically coupled with the magnet side measuring only 0.31” thick. It can be mounted to most clear, tinted, or painted surfaces up to ½” thick. The sensor operates in the daytime or complete darkness so it’s safe for use hidden inside your aquarium stand or in the back chambers of an all-in-one aquarium. 

The sensors are easy to place, easy to move, and easy to clean. They plug into any Sense Port on a HYDROS Controller and do not require any additional power source.


The HYDROS Water Level Sensor is extremely compact and has no moving parts that can fail, allowing it to be used in a multitude of different ways.

  • Set one up as a high-level sensor and another as a low-level sensor as part of a dual-sensor automatic top-off (ATO) system.
  • Place inside your dosing containers so you are alerted when they need to be refilled.
  • Place two in an ATO reservoir- one can tell HYDROS to refill it and the other could prevent it from overflowing.
  • Keep equipment from running dry by having HYDROS cut power to an outlet when the sensor is triggered.



  • Sensor Dimensions: 0.78" x 1.02” (Thickness)
  • Magnet Mount Dimensions: 0.78” (Diameter) x 0.31” (Thickness)
  • Max Mounting Thickness: 1/2”


What’s Included?

1x HYDROS Water Level Sensor


*Hydros Controller Required

More Information
SKU 253466
UPC 4714041212440
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