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  1. RV Surge Protectors
  2. Hughes Autoformers
  3. 30 Amp
  4. Surge Protector
  5. Bluetooth
  6. Emergency Shut Down
Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp

Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp

Item # HU67FR
Our Price: $245.58
You Save: $49.42
RV Surge Protectors
Shipping Weight: 6 lbs
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Keep your RV safe from damage caused by voltage spikes and sustained low voltage. Disconnects power when voltage is low to keep your appliances safe. Downloadable app lets you monitor the connection and diagnose problems from your smartphone. Great Prices for the best rv surge protectors from Hughes Autoformers. Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp part number HU67FR can be ordered online at or call 1-800-940-8924 for expert service.
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Hughes Autoformers RV Surge Protectors - HU67FR

  • 30 Amp
  • Surge Protector
  • Bluetooth
  • Emergency Shut Down
  • Hughes Autoformers
  • Portable
  • 3000 Joules

Keep your RV safe from damage caused by voltage spikes and sustained low voltage. Disconnects power when voltage is low to keep your appliances safe. Downloadable app lets you monitor the connection and diagnose problems from your smartphone.


  • 30-Amp surge protector prevents damage to your RV from power spikes and sustained high or low voltage
  • 4-Second start-up delay gets you up and running faster than other brands
    • Delay makes sure power is safe to use before flowing normally
    • Audible click tells you the surge protector is on
  • Surge protection module offers 3,000 joules of protection in case of lightning strike
    • Can be replaced once it wears out - no need to replace the entire unit
  • Emergency Power Off cuts connection in the event of an error to protect electronics and appliances
    • Shuts down if current drops below 104V or raises above 132V
    • Also cuts power for an open ground, open neutral, reverse polarity, open circuit, or mis-wired connections
    • Automatically turns back on once power is stable for 90 seconds
  • Free Smartphone app for iOS and Android connects via Bluetooth to monitor your system
    • Quickly pair using the QR code on front of device
    • Read volts, amps, and watts in real time to keep an eye on your power draw
    • Get push notification when voltage is outside of acceptable, customizable ranges
  • Easy-to-see indicators show you if there's a problem and what that problem is
    • Watchdog logo illuminates white if power is steady and red if there's an error
    • Error code can be compared to legend on the side of the unit
  • Housing is IP65 rated for protection against dust and rain
  • Metal bracket around cord provides secure place to attach cable lock
  • Easy to use - plug into pedestal to check for a safe circuit and then connect your RV shore power cord
    • Compatible with power cord adapters
  • ETL listed


  • Surge Protector dimensions: 5-1/2" long x 4" wide x 9" tall
  • Cord length:
    • Input: 10"
    • Output: 7-1/4"
  • Amps: 30 amps
  • Energy dissipation: 3,000 joules
  • Limited lifetime warranty

Protect your investment

If you aren't using a surge protector, you're taking a big risk. While spikes caused by lightning can damage your electrical system and appliances, there are common electrical issues that can be just as dangerous. Choosing a surge protector with advanced features will help you protect your RV.

Smart Surge Protection

Electrical problems are not uncommon at campgrounds, especially ones where wiring was originally installed decades ago. When a campground is full on a hot day and everyone is running their air conditioners, low voltage may cause a brown-out situation and damage your RV appliances. On the flip side, faulty transmission, bad wiring, or spikes caused by other RVers connecting to a shared line can all lead to voltage issues that may not be significant enough to trip a basic surge protector.

Power Watchdog surge protectors with Emergency Power Off are equipped with computers that monitor voltage and disconnect when voltage is at risky levels. Plus, they automatically reconnect power when power returns to normal. This keeps your RV safe from problems caused by low voltage like motors overheating in fans and air conditioners.

In the event of a major spike, you can replace the surge protection module itself rather than the entire unit. The modules are plugged in without soldering, so you don't need to be an expert electrician to make an easy repair. In fact, the only tool you need is a screwdriver.

Information at Hand

The Power WatchDog smartphone app

The Power Watchdog app lets you connect to your surge protector via Bluetooth. You can monitor your energy usage, making it easy to diagnose any ongoing energy issues you may be experiencing. When voltage increases or decreases to risky levels, you will be notified right away. You can also reset your surge protector without stepping outside.

PWD30EPO Power Watchdog Surge Protector with Bluetooth and Emergency Shut-Off - 30 Amp - Portable - EMS

Replaces PWD30-EPO

Installation Details HU67FR Installation instructionsAlternate Instructions HU67FR Installation instructions

Customer Satisfaction Score:

Customer Reviews

Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp - HU67FR

Average Customer Rating:  4.8 out of 5 stars   (889 Customer Reviews)

Keep your RV safe from damage caused by voltage spikes and sustained low voltage. Disconnects power when voltage is low to keep your appliances safe. Downloadable app lets you monitor the connection and diagnose problems from your smartphone.


I got my new Watch Dog surge protector right away, thanks George and the rest of you at trailer. A loose connection maybe to blame for replacing my old yeller one, but after 6 years it was time to upgrade to something better and I chose this because of all the videos and magazines and the Quartzsite rv show. I chose etrailer because of the customer service has always be great for me, thanks again everyone.

Dave R.


Well, its still working great, and makes hooking up so much better, so if youre looking to upgrade, youll be happy with this, or call Etrailer, they are great at helping you with what you need.


Received the Watchdog in the specified time window . Took it camping the next day . It is plugged in and doing its job well as I type . Seems to be a great product !!!!
etrailer has once again provided excellent communication and customer service.



Works great . This is always plugged into the power pedestal 1st when camping to insure proper voltage and continuity , then the camper power cord is attached


In my 60 years of construction work this is the best company I’ve found to get parts or equipment. These people know what they’re talking about with every thing they sale. Great prices and great products. I always enjoy talking with them and know they will solve my problem. Thanks etrailer.

Darby D.


Great! It has protected my Rv many times for not only high voltage but low voltage as well. Best product on the market that I’ve found.


Watchdog has performed flawlessly over the first year. It is very user friendly and the app is really nice to have. We have used the app to find out actual amps a device uses by plugging it in and watching the app to see how much amps increases by. For example, our camper is 30amp. With AC running we might be using 18amps and then plug in a cooking skillet and amps jump to 28. This we know the skillet requires 10am pjs. This makes it easy to manage our usage. The Watchdog has saved our camper from both low voltage in campgrounds and power surges. As well as times when we tried to run the AC and microwave at the same time. We also appreciate that the device will reset itself after we lower amps to below 30 without us having to walk out to power post and reset. We like the sound when it kicks in and the light assures us it’s working or if there is a problem at the power pole. We feel very good that Watchdog is helping protect our investment.



The Watchdog did not alert us when it began melting down at one plug and smoke was occurring. I noticed it and shut off power immediately. The Watchdog plug and my robust 30amp cord were both destroyed.


This is a great product. I usually plug it in at the site first, before plugging in or setting up my rig to be sure power is safe. A couple times I exceeded my 30 amps and the Watchdog tripped before the breaker. Nice to be able to check voltage and power consumption from my phone.


So far I love everything about this device. It is a bit hefty. But I suspect it is engineered for performance vs.compactness. The app is nice in that I can get an idea how much current any appliance draws when it turns on. I like the bright light because it illuminates the utility side of my trailer if I need to get to something after sundown. If it ever becomes obtrusive, I will just hang a black trash bag over the power box. A 10 dollar cable lock from wallys mart seems to solve any potential theft problem. But you could also put a small padlock on the hasp that seems to be on every power box. (the plug is actually engineered so that you can fully close the door)
i will change my tune if it smokes in the next year. But so far it is the best $xx.xx I’ve thrown at my rv.


This power management protector works great. I haven't had any issues with it. I wish you could dim the white dog face a bit but otherwise I feel like my T@B is being protected from any electrical issues.


Recent purchase. Installed/connected to motorhome in storage for the winter. We often have power outages in our rural area and believe this will prove to be a beneficial item to protect the motorhome's circuitry.

Rodney H.


Great. Used during winter storage and campground visits. No issues. Very pleased.

Etrailer Expert

Mike L.


@RodneyH Awesome! We're so glad to hear that!

Rodney H.


It is working great. It has protected the MH circuitry during thunderstorms, hailstorms, and fluctuating current at various campgrounds plus winter storage at home.

Etrailer Expert

Mike L.


@RodneyH We're glad its working well for you!


This HUGHES AUTOFORMER WITH BLUE TOOTH is a great product. Living mostly in a 5th Wheel and 50 amps prior to going into a 30 amp trailer for the summer the use of this product has given us great control over our AMP/Watt usages. I have been able to isolate each and every appliance to keep in sync with the power available to the trailer. Our next purchase for the 50 amp 5th wheel WILL be the Huges Autoformer 50 amp/Bluetooth version.


I am so happy with this surge protector! Just this morning it prevented a surge at a campground that I am workamping at! Great peace of mind cuz you just never know when/if it's going to happen!



Hey! Its been a year & the Hughs Big Dog is still protecting me! I am more than pleased with my investment into this product!!


This was our first purchase of a surge protector. It worked very well for us and protected us in a couple of situations where there were electrical issues in the campground (one an over voltage, one an under voltage). Using the app on your phone it also provides a lot of useful information as to what is drawing amps on your Camper/RV. We found that you could not run the AC and the Microwave at the same time. Having the ability to use the phone app for a reset was a huge bonus. This will definitely protect all of your sensitive electronics on your rig. And I like that you can have a replacement module on hand and ready should the unit take a large spike. We are selling our 30 amp Watchdog with our old camper and upgrading to a new 50 amp unit, so we will be purchasing another Watchdog.


Very pleased with the Power Watchdog. Would definitely recommend it. Has shut down twice because of electrical issues. Both times reset, and all good.



It actually stopped working while on a trip. Contacted CS. They sent a replacement that delivered before we got home.


Easily connects with Bluetooth. It has saved us on several occasions! Reverse polarity twice. It gives us comfort to have such a great product


Just recieved today and I like my Watchdog! I like the app, takes the guess work out of power management! E-Trailer has decent prices and excellent service!! I’m a happy customer!!


Works as advertised. I’ve used a couple of times since purchasing and have had no problems. Having the app on my iPhone is very helpful knowing the amount of amps being used versus what’s available. Great product



Been using for one year. Still performs great. Installed a soft start on my AC and by using the app I’m able to see what actual startup amperage is vs run amperage. Great product.


I've had zero problems with this unit can run it constantly


Looks like a good quality Surge Protector. As usual, great customer service and fast shipping. Since I haven't used the product yet, I'll update should it not work properly.


We got the Watchdog a year ago and it's performed very well. Only had one surge issue at a Campground but the watchdog shut it down so we didn't have any issues with our camper. We highly recommend.


This is the best surge protector we have own in all our years RV’ing. The Bluetooth connection, allowing the user to monitor key parameters, is very useful in managing electric load.


Worked perfectly!


Works well to protect my campers electrical system


I’ve only used the PWD a few times, but it has performed flawlessly. I particularly like the ability to see on my phone how many watts each light, appliance or device draws.



Awesome product! I recently had a 30 amp RV outlet installed by an electrician and the PWD detected that the neutral was reversed. I feel very safe when I have my PWD plugged in!!


Really happy with this protection. When accidentally overloading a circuit a few times (turning on a portable heater and coffee maker at the same time), no need to crawl down and reset the main breaker on my electrical panel.
Power Watchdog auto tripped the surge and easily restored the circuit using the app reset (now with the heater off and coffee brewing).
I also use a medium size chain and lock, along with a grey plastic grocery bag to cover and keep it from drawing attention to itself while camping.


I have been very happy with my 30A Bluetooth Power Watchdog. We typically camp 9 weekends and one 2-3 week trip each year. We stay a many different campgrounds. Since we bought this I have had it protect us from a few overcurrent situations due to low shore power voltage. The ability to use my phone to troubleshoot is great.

There are only two improvements I would reccomend. First, tone down the LED brightness for the status. The bright white dig face is a bit much. I cover the power pedestal with a co tractor grade trash bag to solve this. Second, I find the leads a bit long. The issue here is the connection to the power cord oftem sits on the ground. I end up using shock cords to hold the box up higher on the pedestal.

Overall, I am very pleased with it.


Works as promised. Annoying feature is that over current trips at a few tenths of an amp over 30amps. 30 amp Circuit breakers normally trip at about 35 amps. So we get over current shutdown every few days from the power watchdog

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