Guardian Corrosion Control takes special care to make our units the most easy-to-use, easy-to-install, and hassle free solars in the industry. At Guardian, we call these solars "Pole-caths". Generally, this type of solar can be totally mounted on a pole, thus the name. They can be steady current, steady voltage, variable current, or reduced power at night units. Also, units are available in almost any size imaginable. We have been building solars for the better part of 3 decades and would love to supply you with a solar solution to your cathodic protection needs.