Easy : APC. No experience with them, but atleast they are from a known company.

Advanced : Callab.
Need to know what unit suitable for your setup, and understanding the concept of making a "safe island". Used it long time ago and successfully protect my Streamyx modem from lightning surge. But these days I don't have issue with surge anymore, so not using it.

Their online website & store sucks though... http://www.callab2u.com/main/3000/index.as...&t=online-store

Used to have authorised seller here https://forum.lowyat.net/topic/272679 but already locked. Can read & use it as a reference. And maybe can ask for recommended unit for your setup on their Facebook.

My past experience with their unit : https://forum.lowyat.net/index.php?showtopi...post&p=71280287

This post has been edited by andy0212: May 11 2021, 03:16 PM