We all buy surge protectors to "protect" our valuable electrical items.
Vendors vary on "Requirements" to cover damaged items.
Many require that you Register the suppresor

Belkin requires that you keep up with purchase date and do NOT require a reciept or registration.
Check your paperwork and Make Sure you follow the requirements to validate the warranty.

The rating is in "Joules" a minimum that I consider is 3000 and more.
Make sure the one you get has "telephone jacks" and "satellite dish" connections.

Also there are Whole House Surge Protection for those with deep pockets $355.0

Home Depot and some other outlets may carry the Intermatic EG240RC or IG1240RC OR Siemens QSA2020

Check with a qualified electrician on installation.

Also many homes are not properly grounded.
In addition to the neutral wire that is grounded at the pole where the transformer lives, you must have a 8' Coper Coated ground rod driven near the meter base. See NEC 250-81
In this section, it says corrosion on the ground rods may result in poor grounding.

In areas with very dry soil conditions, several ground rods may be needed. These are placed no closer than 6' apart and a Electrical Inspector needs to check the systm for proper grounding resistance.

This is why you get a Permit when doing electrical work.

Hope this helps
Doc