Looking at that "Surge Protector" I'd say you need to upgrade
Your choice of two
For many years the Progressive Industries HW-30/50c was considered the cadillac of Surge protectors The HW means Hard wired.. INSIDE the RV, out of sight of sticky fingers.. 30/50 refers to 30 or 50 amp RV c.. I assume there was an a and a b and c was the latest versison but that is an assumption
They came with a Lifetime or limited lifetime guarantee (limited to orgianal owner) but I understand they may have a period of time guarantee now.
The other company was TRC who made the "SURGE GUARD" brand and they too offer a Hard Wired as well as portables and ones like the above (Oh PI makes those too)
They were.. some year back, purchased by Southwire and where as TRC had I believe a 1 year guarantee.. Southwire upped it to Limited Lifetime or so they tell me.
The HARD wired WITH a remote is what I recommend. Out of sight out of mind.
Now why should you upgrade.
The unit you have is not much protection.. Oh it is a decent spike protector and the Lights will tell you if a park is miswiered but that's about all.
The top end units like the TRC I had however do a bit more
They monitor voltage.. if it goes to high (Like 130 (not sure of the cut off) They shut you off because high voltage can be a problem.. Same if it goes too low (Like 105) and though many tell me "No such animal" there are outlets that you can easily plug a TT-30 plug into but they are 240 And I've met an electrician who was installing a TT-30 outlet for a customer and I noticed he had a dual-ganged 30 amp breaker (normal for a 240 volt install) Pointed out that TT-30s are 120 volt.. Saved him a rather expensive insurance claim and possible law suit.
Back then there were dozen of "OPPS I pluged a 30 amp into 240 volt" thread s
Well the top end unit protect you when you do that.
Another feature is time delay.. i plug in and go inside and just shy of 3 minutes after POWER ON outside I hear a CLUNK and power on INSIDE as well. What is the signifance of 3 minutes.
I've seen man power "Blinks" Where poer goes out for just a second or a few seconds.. Now imagine that an Air conditioner is runnng and power BLINKS The unit pictured says "oh well" and clips a few spikes but when power returns that poor compressor is not trying to start with a full head of pressure (NOT Going to happen. what's going to happen is a stalled rotor and overheat as it stays in START too long)
With the nearly 3 minute pause the Surge Guards cause it has time to bleed down and do a normal restart.. No damage.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times