The revised GESP and the new GESP+PoE-IN can each be used separately and effectively for a max impulse spark-over voltage of 700 V. However, put them together, and you never have to worry about electric surges or static build-up again.
Putting the GESP on the mast gets the job done concerning the antennas. The revised GESP comes with a new and enhanced IP67 (international protection code) weatherproof case and is no stranger to outdoor conditions.
For further protection to your devices on the ground, as well as a power alternative for the antennas, you can use the GESP+POE-IN. In case you're located in regions with frequent storms and lightning showers, using a surge protector on both ends of long wires is recommended.
For a small price, using the GESP and the GESP+PoE-IN can help reduce network point of failures, and, of course, safeguard hundreds of dollars worth of equipment and priceless data.