Remote cellular sites that reside on mountaintops operate under the harshest of electrical conditions. Devastating lightning strikes and strong surges and spikes are a common occurrence in these locations. EFI's industrial surge protectors have successfully protected hundreds of remote cellular transmission sites all over the world, including sites in the rugged electrical environment of Central and South America. Our top-of-the-line surge protectors are rugged industrial strength devices, engineered with durability and long service life in mind.