Top critical review
Didn't protect from lightning surge
Reviewed in the United States on September 18, 2019
We were told to buy four of these to protect a nano transmitter and receiver to get internet beamed over to our house from a community antenna. I told the I.T. guy I had absolutely no confidence they would protect electronics from a surge from lightning, given what I know about lightning arrestors from being a solar installer. Stupid me, I listened to him instead of myself. The nano transmitter lasted a couple of months, killed not by a direct hit but a lightning strike who knows how far away. Might work in your office from surges from the grid, but this is not much of a surge suppressor, and certainly not a lightning arrestor. Several hundred dollars of blown electronics proved that.