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  1. RV Surge Protectors
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  7. Emergency Shut Down
Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp
Hughes Autoformers

Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp

Part Number: HU27FR
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$277.65
Retail:$333.00
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RV Surge Protectors
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Get on-board protection from power surges and low voltage with this hardwired surge protector. Disconnects power when voltage is low to keep your appliances safe. Monitor your connection and diagnose problems with your smartphone. Great Prices for the best rv surge protectors from Hughes Autoformers. Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp part number HU27FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Hughes Autoformers RV Surge Protectors - HU27FR

  • 50 Amp
  • Surge Protector
  • Hardwired
  • Hughes Autoformers
  • Bluetooth
  • Emergency Shut Down
  • 6100 Joules

Get on-board protection from power surges and low voltage with this hardwired surge protector. Disconnects power when voltage is low to keep your appliances safe. Monitor your connection and diagnose problems with your smartphone.


Features:

  • 50-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 6,100 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
  • Hardwired installation inside your RV
    • Removes the extra steps of using a portable unit at a park power pedestal
    • Protects the unit from the elements
  • ETL listed


Specs:

  • Dimensions: 5-1/2" long x 4" wide x 10-9/16" tall
  • Amps: 50 amps
  • Energy dissipation: 6,100 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.



PWD50EPOH Power Watchdog Surge Protector with Bluetooth and Emergency Shut-Off - 50 Amp - Hardwired - EMS

Replaces PWD50-EPO-H

Installation Details HU27FR Installation instructionsAlternate Instructions HU27FR Installation instructions



Customer Satisfaction Score:


Customer Reviews

Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp - HU27FR

Average Customer Rating:  4.8 out of 5 stars   (1024 Customer Reviews)

Get on-board protection from power surges and low voltage with this hardwired surge protector. Disconnects power when voltage is low to keep your appliances safe. Monitor your connection and diagnose problems with your smartphone.

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See what our Experts say about this Hughes Autoformers RV Surge Protectors

  • Watchdog Surge Protector Compatibility With Generator Use
    The Hardwired Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 50 Amp Item # HU27FR is compatible with generator use. One thing you will have to note is that some generators have a ‘floating neutral’. This might cause the Power Watchdog EPO surge protectors or any other EMS surge protector to give you an ‘open ground’ or ‘open neutral’ error code and prevent power from going into your RV. If this is the case with your generator you can resolve this by plugging the...
    view full answer...
  • Does Hughes Autoformers Voltage Booster Come with Watchdog
    Hey Matt, so the Hughes Autoformers Voltage Booster part # HU57FR has surge protection and a voltage booster built into it but it does not have the watchdog feature. You'd need that separately with the Power Watchdog part # HU27FR.
    view full answer...
  • Testing RV Electrical Components After A Power Surge
    The converter is just one more appliance that's built into your RV's power center so there is the chance that it could be damaged or that it may still properly function. The converter is just a charger for your RV's battery and has its own circuit breaker in the AC distribution panel. You can test the output of the converter to the battery to determine if the converter is faulty and in need of replacement with part # PD4560CSV. A power surge can damage everything connected through the...
    view full answer...
  • Installing Power Watchdog 50 Amp
    Hi Tom, I reached out to the manufacturer of the Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - Hardwired - 50 Amp # HU27FR who said they need to be installed between your power cord and the transfer switch. They said the inputs and outputs are labeled on the terminal block and be sure to follow that. I have also added a link below to a video of an install we did which I hope is helpful.
    view full answer...
  • Campground Power Is Providing Overvoltage and Causing The Camper To Shut Down Power
    The Progressive Dynamics PD9200 Series Battery Converter Charger 80A only takes 120 volt power and converts it to 12 volt to run 12 volt accessories such as the awning, vent fans and lights. Since you mentioned you tested the battery and it is good then it sounds like your current converter is operating correctly. While the Hughes Autoformers does not protect from overvoltage the Power Watchdog Surge Protector # HU27FR does and if you are using them together this is likely what is causing...
    view full answer...
  • Replacement Surge Module for Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down
    The correct replacement surge module for the Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down # HU27FR is the # HU58FR. I attached an installation video below for your reference.
    view full answer...
  • Parts Needed to Add a 50-Amp Service and 24Volt Battery System on Cargo Trailer Conversion
    So we will start with a Power Cord # A10-5036EDBK which you can connect to your trailer using a Power Inlet # A10-50INBKVP. From there you will run your electrical into a panel which you can get from a local hardware store. The Progressive Dynamics 9100 Inteli-Power Lithium Converter Charger # PD914024ALV will connect to a power outlet. We do have the Go Power Industrial Pure Sine Wave Inverter # 34279952 which is compatible with the 24 volt system and has the 2,000 watts of power you are...
    view full answer...
  • Troubleshooting A Hughes Autoformers Power Watchdog Surge Protector Thats limiting Voltage
    If the Portable Power Watchdog Surge Protector # HU87FR was limiting the voltage running to your RV then it's most likely a bad control module and you'll need the Replacement Surge Module for Power Watchdog Surge Protector with Emergency Shut Down # HU58FR. These modules are model specific so you'll want to ensure you're purchasing the correct one for your model. I've listed the modules and their compatible systems below incase you have a different one. The # HU38FR fits the # HU47FR The...
    view full answer...
  • Will The 50 Amp Power Watchdog Surge Protector # HU27FR Work With Both 15 and 30 Amp Adapters?
    Yes, you can use the Power Watchdog Surge Protector # HU27FR with both your 30-amp and the 15-amp adapters. The system will show that the 2nd lines are not receiving power but you will still get the surge protection and voltage monitoring protection from the unit.
    view full answer...
  • Recommended Hardwired Surge Protector
    Yes, we do have something that will protect your Airstream Travel Trailer. Depending on whether or not you have a 30 amp or 50 amp system you will want one of the following parts. 30 Amp System - Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down item # HU77FR 50 Amp System - Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down item # HU27FR These are hardwired surge protectors that prevent damage to your RV from power spikes and sustained high or...
    view full answer...
  • Recommendations for 50A Service to 30A and 15A Services, and a Secured Surge Protector
    We definitely have some parts you can use for your application but none of them come in an all-inclusive kit. For a 50A to 30A service I recommend the Mighty Cord # A10-3050FHVP. For a 50A to 15A service I recommend the Mighty Cord # A10-1550. Please note when you are pulling power from pedestals that are rated for less power than your camper you'll need to keep track of how much power you're using so you don't overload the pedestal. I've attached a link to a helpful article about power...
    view full answer...
  • Are Replacement Surge Modules Available For Hughes Autoformers Power Watchdog Surge Protectors
    The Surge Modules for Hughes Autoformers Power Watchdog surge protectors are available but they are specific so to each model so you'll want ensure that you're getting the correct one. The # HU58FR is compatible with the portable # HU87FR and hardwired # HU27FR 50 amp surge protectors. The # HU38FR is compatible with the portable # HU47FR 50 amp surge protector. The # HU98FR is compatible with the portable # HU67FR and hardwired # HU77FR 30 amp surge protectors. The # HU48FR is compatible...
    view full answer...
  • Can Power Watchdog Surge Protector Be Installed After Transfer Switch
    I suppose you can put the Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down # HU27FR after the transfer switch, but this is really intended to prevent surge damage from the shore power connection to begin with so if you install it after the transfer switch you would risk surge damage to the transfer switch itself and potentially your generator. Because of this I recommend installing it before the transfer switch - generators don't pose nearly as much of a threat as the...
    view full answer...
  • Does 50A Power Watchdog Portable Surge Protector Come with Twist Lock Connection
    The 50A Power Watchdog Portable Surge Protector # HU47FR only comes with the standard connectors but if you want to be able to use twist lock connectors you can use the Hardwired Version # HU27FR instead and use a twist lock connection from your trailer to the pedestal. This gives you the same functionality as the portable one aside from being able to seamlessly move it from one trailer to another. Attached are review videos for you to check out.
    view full answer...
  • Does Power Watchdog HU27FR Work with 110 or 220 Volts
    Actually the WatchDog # HU27FR is for 120 volt applications. If the voltage is above 132 it will cut power. The 50 amp service at RV parts is actually 120 volt and not the same as in a house.
    view full answer...
  • Is the Hughes Autoformers Voltage Booster with Surge Protection Compatible with a Generator
    No, the Hughes Autoformers Voltage Booster with Surge Protection # HU24FR will not work with your inverter generator. It is designed to be used with a pedestal at an RV park, not a generator. We do not have a voltage booster that will work with a generator. But if you are wanting a surge protector that works with a generator you can use the Power Watchdog Surge Protector # HU27FR. One thing you will want to note is that some generators have a ‘floating neutral’. This could cause the Power...
    view full answer...
  • Does 50 Amp Surge Protector Offer More Protection than 30 Amp Surge Protector?
    The Hughes Autoformers are certainly the deluxe of all the power protection products. On top of all the low-voltage, high-voltage, Mis-wiring protections they offer - the hardwired units offer protection from thieves! This unit goes inside your coach instead of hanging from the outdoor post. However, buying a 50-amp unit offers no more protection than a 30-amp unit IF your coach or trailer only connects to 30-amps. If your camper only plugs into 30 amp then you should purchase the...
    view full answer...
  • Power Watchdog Bypass Or Standby Mode Possibilities
    I spoke with Hughes Autoformers, and they confirmed that the Power Watchdog Surge Protector # HU27FR is not available to be bypassed or put into standby mode.
    view full answer...
  • How Does Power Watchdog part # HU27FR Let You Know Something is Wrong with RV
    The Power Watchdog part # HU27FR does not have a shut off switch but it does have error codes it will display on the unit as well as will send your phone messages with error info as well if for whatever reason it has to shut down the power to your RV. Also...if there's a problem the dog's face on the unit will go from white to RED.
    view full answer...
  • What Orientation Does The Power Watchdog Surge Protector Need To Be Mounted In?
    The orientation of the Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down # HU27FR that you mention does not matter. This unit can be mounted in any orientation, however it is easier to read if it mounted vertically. I have attached a customer submitted photo showing # HU27FR being mounted upside down.
    view full answer...
    Image 1 for
  • Does Power Watchdog Surge Protector Come with Mounting Hardware
    Thanks for reaching out, Scott! Yes, the Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down # HU27FR comes with the screws and bars you asked about (see attached photo). Our photo department tries to highlight different things on our products which is why those parts aren't in all of the photos.
    view full answer...
  • How Can I Power My Camper From a Generator With the Hard Wired Watchdog Surge Protector?
    As I am not sure of your specific camper there are a couple options to check out. First the Hughes Autoformers Ground Neutral Bonded Plug for Generators # HU33FR is designed to allow you to plug into your generator without causing the Power Watchdog Surge Protector # HU27FR to fault. The plug inserts into an unused outlet on your generator to create a neutral to ground bond. If your generator is an onboard unit that is hardwired to the camper you will want to install the surge protector...
    view full answer...
  • Can Power Watchdog Surge Protector Plug Directly Into RV
    Hello Joellen; you can plug the Power Watchdog Surge Protector # HU47FR directly into your RV. Basically, as long as it is plugged in-line between your RV and the shore power it will work as intended. Another option is to get the # HU27FR and hard wire it into your RV so you don't have to plug anything in.
    view full answer...
  • Can Ends of Portable Power Watchdog Surge Protector be Cut Off and Hardwired to Trailer Wiring
    You can cut the wires of the Portable Power Watchdog Surge Protector # PWD50-EPO and splice them together using a terminal block but my contact at Hughes Autoformers mentioned this will void the warranty so you'll want to just connect it per the instructions or return the portable version and get the Hardwired Power Watchdog Surge Protector # HU27FR like you initially planned to do so you remain under your warranty.
    view full answer...


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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Mary K
Written by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Cody B
Updated by:
Cody B
Employee Manda E
Updated by:
Manda E
Employee Amanda M
Edited by:
Amanda M
Employee David F
Test Fit:
David F
Employee Bradley B
Test Fit:
Bradley B
Employee Schuyler H
Video by:
Schuyler H
Employee Ethan H
Video by:
Ethan H

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