Product model: PWD30-EPO、PWD50-EPO、PWD30-EPO-H、PWD50-EPO-H

1. Scan BLE which can sensor energy.
2. According to different sensors to choose a different interface.
3. Get alert message from error code.

What’s New

Version 1.3

1. Only EPO products are allowed to be added to the device list by QR code.
2. Add use teaching.
3. Modify some UI.

Ratings and Reviews

3.8 out of 5
81 Ratings

81 Ratings

Hometurf ,

Good but needs updating

I've had the 50 Amp non-EPO and now the 50 Amp EPO app and the EPO app is lacking the ability to monitor Amps like the non-EPO can for some reason. Also, the biggest annoyance (for me) is the "Disconnected" notification which simply means you are out of bluetooth range. My camper is stored within 30 feet of my house so I get this alert VERY often. As a matter of fact, it depends on where in my house I am. Yes, you can go into your iPhone Notifications and turn Notifications off for the Watchdog App but that turns ALL notifications off. I'd like to know if there is an anomaly. Having the ability to pick and choose which alerts you want to receive would be HIGHLY appreciated. Other than that, the app does what it's supposed to do. Seeing the current amp draw and voltage is a strongpoint. Just wish it could be more "adaptable" to individual needs. Watchdog itself (my prior one AND this one) work PERFECTLY BTW. None better!


Updating and tweaking

The surge protector is a huge comfort to have for my 5th wheel. I would recommend every camper have one. The only thing I would change is the app. I’d like to see more features. Like what kind of notifications I receive on my phone. Or if I’m away from my camper and it stopped a surge, it would notify me when I return about why it powered off and for how long (Aside from seeing the clock on the microwave flashing or food in my fridge going bad).
Thank you Hughes for making a solid peace of hardware. Let’s put a bit more energy into the user experience.

Bbearmel ,

Bulldog light

Have the 50 amp version. Love your product. I am always bragging about it to people and showing them the app. Awesome for diagnosing problems in the rig and knowing which devices are on which electrical leg and how much energy they draw. This helps me know how to manage the electricity on those rare times I have to connect to 110 socket.
My one big complaint is the bulldog logo is too bright in campsites. And there are times I don’t like it drawing everyone’s attention to it. Wish the app would allow you to turn it off or at least dim it down.

App Privacy

The developer, Hughes Autoformers, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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