APC PNET1GB ProtectNet Standalone Surge Protector for 10/100/1000 Base-T Ethernet Line - White

This simple to use device offers a good level of protection against the potential damage caused by induced currents on ethernet cables. They just plug in-line with your existing ethernet cables, and have a 30cm bonding cable that has to be linked to a good Earth point.After extending my home network 30metres to an out building, using a roof-roof Cat6 cable, I started to think about the impact of lightning induced currents passing up and down the cable into my router and switches. I wanted something that could be easily installed into the existing set up and a search came up with these. APC have lots of industry qualified products suitable for a large range of equipments and scenarios, all aimed at surge current and over-voltage protection. So they appear well spec'd. Following the instructions I put one at each end of my exposed link cable adjacent to the Netgear switches; as an earth bonding point I used a mains inlet earth. I chose this approach rather than running a dedicated bonding cable back to the consumer units in the two buildings as it would have been a bit of a routing challenge. Can I tell if they are working? no, but then I've not noticed any impact on my 1Gb inter-building speed. They are cleared to 1000BaseT the Amazon description is incorrect. Hopefully I'll never notice them working when the next lightning storm passes by.

Its APC so I'm hoping its great and I'm hoping my smart TV wont be cattle trucked with the next thunder storm

Great bit of kit and easy to install. Having lost over 200GBP's worth of kit to lightning this is well worth it, so far it has protected my network with no problems

I'm using this on a VDSL line after a summer lightning strike on a nearby tree fried my router (and a few others on the street). As expected the sync speed has dropped from 30Mbit/s to 28Mbits downstream and 5.8 to 5.5 upstream and curiously the standard phone now rings continuously on a incoming call - the DECT phone is quite happy with whatever effect is happening.Given that I never sustain maximum data transfer rates this is not an issue, especially if it means the next time we have a storm I don't end up having to spend £200 on another Vigor - thankfully in the six months since I've had it we've not had a real live "what the eff was that" situation.

I have installed them, hope I don't find out how good or bad it is.