Hughes Power Watchdog PWD50-EPO-H
#1 in 50 ampFull review
A hardwired EMS with phone monitoring for 50 amp RVs. A good buy while it sells for less than the Gen II version.
Amazon $329.99$329.99
4.3/5
A thorough 50 amp EMS with a long warranty for big coaches. Worth the premium mainly for the extra neutral protection and the warranty.
- EMSType
- 4,200 JSurge rating
- PortableMount
- LifetimeWarranty
Check price at Nomadic Supply$399.95
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Cuts power on high or low voltage, miswiring and high neutral current
- Watches for an open neutral on the RV side too, a fault most units miss
- LCD and app show volts and amps
- Lifetime warranty with connected equipment coverage
Cons
- The most expensive portable 50 amp unit here
- Not in stock at Amazon when checked; owner reviews on the maker page report app pairing problems on some phones
The Southwire Surge Guard Bluetooth EMS family
Every Southwire Surge Guard Bluetooth EMS model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Southwire Surge Guard 34931 | EMS | 4.1/5 | $301.12 |
| Southwire Surge Guard 34951 (this one) | EMS | 4.3/5 | $399.95 |
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 | 34951 |
|---|---|
| Protection | |
| Service | 50 A |
| Type | EMS |
| Surge rating | 4,200 J |
| Voltage cutoffs | 102 V / 132 V |
| Miswiring detection | Yes |
| Restart delay | Yes |
| Build | |
| Mount | Portable |
| Display | Yes |
| App | Yes |
| Weatherproof | Yes |
| Lock | Yes |
| Warranty | Lifetime |
Alternatives in this service
Hughes Power Watchdog PWD50-EPO
#2 in 50 ampFull review
A full EMS with phone monitoring and a replaceable module for 50 amp RVs. Strong value when it sells below the Gen II price.
Amazon $339.99$339.99
Hughes Power Watchdog PWD50EPOHW
#4 in 50 ampFull review
A connected hardwired EMS for 50 amp RVs that you can monitor and switch from anywhere. For owners who want theft proof protection with remote control.
Power Watchdog $399.99$399.99
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