The most connected portable EMS for 50 amp RVs, with remote shutoff and a replaceable module. For owners who leave the RV plugged in while away.
Amazon $399.99The Hughes Power Watchdog PWD50EPOW is the better RV surge protector overall, rated 4.1 to 2.3. The Hughes Power Watchdog PWD50EPOW leads on protection and monitoring. The Camco Power Grip 50A Circuit Analyzer wins on price. The Camco Power Grip 50A Circuit Analyzer costs $199.49 less ($200.50 vs $399.99).
A surge protecting 50 amp dogbone that is only worth it on sale. At full price an EMS protects far more.
Amazon $200.50Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Hughes Power Watchdog PWD50EPOW for protection (high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module vs surge only) and monitoring (app vs indicator lights only).
- Choose the Camco Power Grip 50A Circuit Analyzer for price ($200.50 vs $399.99).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 50 amp RV surge protector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hughes Power Watchdog PWD50EPOW | Camco Power Grip 50A Circuit Analyzer |
|---|---|---|
| Overall rating | 4.1/5 | 2.3/5 |
| Protection 35% | 100 high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module | 0 surge only |
| Surge rating 10% | 50 surge rating not published (neutral score used) | 100 4,200 joules |
| Monitoring 10% | 50 app | 0 indicator lights only |
| Price 20% | 21 $399.99 | 66 $200.50 |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Hughes Power Watchdog PWD50EPOW | Camco Power Grip 50A Circuit Analyzer | |
|---|---|---|
| Protection | ||
| Service | 50 A | 50 A |
| Type | EMS | Surge only |
| Surge rating | - | 4,200 J |
| Voltage cutoffs | 104 V / 132 V | - |
| Miswiring detection | Yes | No |
| Restart delay | Yes | - |
| Replaceable surge module | Yes | - |
| Build | ||
| Mount | Portable | Portable |
| Display | No | No |
| App | Yes | No |
| Weatherproof | Yes | Yes |
| Lock | Yes | - |
| Warranty | Lifetime | - |
| Released | 2025-02-01 | - |
