Southwire Surge Guard 34931
#5 in 30 ampFull review
A complete 30 amp EMS with an app and the best warranty terms here. For owners who want everything and don’t mind the price.
Amazon $301.12$301.12
4.0/5
The most connected portable EMS for 30 amp RVs, with remote shutoff and a replaceable module. For owners who leave the RV plugged in while away.
- EMSType
- PortableMount
- LifetimeWarranty
Check price at Amazon$309.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Older model: this replaces the Hughes Power Watchdog PWD30-EPO (rated 4.1). See every Hughes Power Watchdog Gen II generation.
Pros
- Cuts power below 104 V or above 132 V and on faults, and you can cut or restore it remotely
- Wi-Fi and Bluetooth alerts reach your phone anywhere with service
- Replaceable surge module and a limited lifetime warranty
- Lockable, weather proof receptacle bay
Cons
- The priciest portable 30 amp unit here
- No published joule rating
The Hughes Power Watchdog Gen II family
Every Hughes Power Watchdog Gen II model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Hughes Power Watchdog PWD30W | Surge only | 3.3/5 | $169.99 |
| Hughes Power Watchdog PWD50W | Surge only | 3.3/5 | $249.99 |
| Hughes Power Watchdog PWD30EPOW (this one) | EMS | 4.0/5 | $309.99 |
| Hughes Power Watchdog PWD50EPOW | EMS | 4.1/5 | $399.99 |
| Hughes Power Watchdog PWD30EPOHW | EMS | 4.1/5 | $280 |
| Hughes Power Watchdog PWD50EPOHW | EMS | 4.1/5 | $399.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its service. How we rank explains each one.
Specifications
| Model number | PWD30EPOW |
|---|---|
| Protection | |
| Service | 30 A |
| Type | EMS |
| Voltage cutoffs | 104 V / 132 V |
| Miswiring detection | Yes |
| Restart delay | Yes |
| Replaceable surge module | Yes |
| Build | |
| Mount | Portable |
| Display | No |
| App | Yes |
| Weatherproof | Yes |
| Lock | Yes |
| Warranty | Lifetime |
| Released | 2025-02-01 |
Alternatives in this service
Hughes Power Watchdog PWD30EPOHW
#6 in 30 ampFull review
A connected hardwired EMS for 30 amp RVs that you can monitor and switch from anywhere. For owners who want theft proof protection with remote control.
Amazon $280$280
Hughes Power Watchdog PWD30
#8 in 30 ampFull review
A surge protector with phone monitoring and a replaceable module for 30 amp RVs. It suits owners who want to watch park power but don’t need automatic shutoff.
Amazon $139.99$139.99
Compare
Compare the Hughes Power Watchdog PWD30EPOW with any other RV surge protector →
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