AVR question

Does AVRs have built-in surge protection ?

Originally posted by liteonmania
Does AVRs have built-in surge protection ?

If you are referring to Automatic Voltage Regulators, this is just a premium feature of UPS (uninterruptible power system).

See Automatic Voltage Regulator

The answer is yes. :wink:

Let’s say that it is an very old model… with only two output switch
without telephone line or ethernet protection.

If instead of asking a general question, you have a specific older model in mind, I suggest that you do a little checking for yourself.