Electrosense Inc. manufactures advanced yet affordable Holding Tank (Freshwater and Waste water) Monitors for marine and RV use.

Our systems use no moving parts and very little power. Each sender unit is custom-made, not off-the-shelf. This means that we can provide accurate monitoring for irregularly shaped tanks like those built into the fiberglass hulls of boats. Systems are maintenance-free, easy to install, and durable.

Most systems on the market use float switches or arms, which eventually break or get gummed up and stuck; or they use "stick-on" sensors on the outside of the tank, which can easily be fooled into false readings by buildup on the inside of the tank's walls. Our sensors are all-electronic - no moving parts to break or get stuck. The displays can be powered by boat power or by a small 12-volt battery attached to the back of the display, which means that you don't have to run any power cables. The only cable to run is the control cable between the sender unit and the display unit. We use Cat5 Ethernet cable for that, so all you have to do is plug it in - no crimping or splicing.

It doesn’t get much easier!

And since everything is constructed of durable materials like PVC and stainless steel, then sealed in epoxy, our systems are tremendously durable and should last for years in the harsh marine environment.

Water and Holding Tank Monitor Systems

The Holding Tank (freshwater and waste water) Monitors are a “Push to Read” system with 6 blue LEDs illuminating when fluid is present. Monitors are either white or black.

The “in-tank” sender unit has stainless steel sensing rods that are custom cut according to the size, shape and dimensions of your tank.

The systems are specifically designed for their specific use in freshwater or waste water conditions and should not be interchanged.
Click on the Waste Water Monitor or Freshwater Monitor page for more information. The Product Video also provides a detailed overview on how the systems function.