Level Controller for an open tank mounts on the rim of the tank. Thumbscrews clamp the bracket securely to the rim of the tank. Each level probe containing a miniature float switch can be adjusted by hand by loosening the thumbscews.
A recent upgrade to our Level Controllers is the addition of another float switch so the device now has 4 floats. Two control the liquid level, and the other two are emergency level floats that sound an alarm if the level gets too high or too low.