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Original & OEM Quality Parts

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Hughes 30Acover Autoformer Rain Cover For 30A Autoformer - 30Acover - 977-30Acoverf1

Power Watchdog
$22.60

Made from heavy duty waterproof material. This cover will keep your autoformer safe and protected from rain and the elements. Features heavy duty 'hook & loop' closures. Protect your investment, keep it running for many years.

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Hughes 30Akit Autoformer Internal Hardwire Mounting Kit, 30 Amp - 30Akit - 977-30Akitf1

Power Watchdog
$119.88

Keep your autoformer unit protected from the rain, and out of sight with this hardwired mounting kit. Made from heavy duty materials with all the necessary hardware. Kit Includes: 5-foot cord with male plug & female receptacle for the service cord.

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Hughes 50Acover Autoformer Rain Cover For 50A Autoformer - 50Acover - 977-50Acoverf1

Power Watchdog
$24.03

Made from heavy duty waterproof material. This cover will keep your autoformer safe and protected from rain and the elements. Features heavy duty 'hook & loop' closures. Protect your investment, keep it running for many years.

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Hughes 50Akit Autoformer Internal Hardwire Mounting Kit, 50 Amp - 50Akit - 977-50Akitf1

Power Watchdog
$164.72

Keep your autoformer unit protected from the rain, and out of sight with this hardwired mounting kit. Made from heavy duty materials with all the necessary hardware. Kit Includes: 5-foot cord with male plug & female receptacle for the service cord.

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Hughes Autoformer Pwd30Epohw Power Watchdog Gen Ii Wifi Smart Surge Protector With Auto Shutoff, 30A Hardwired - Pwd30Epohw - 977-Pwd30Epohwf1

Power Watchdog
$410.87

The second-generation Power Watchdog introduces an innovative new design that sets it apart from any other surge protector on the market. The Power Watchdog offers enhanced weather protection, improved security, and unmatched user-friendliness. The addition of built-in WiFi, which complements its existing Bluetooth technology. This integration allows RVers to stay connected and in control from anywhere in the world without the need for extra hardware. Patented, replaceable surge module. In the event of severe power spikes, users can simply replace the module instead of the entire unit. Instant Problem DetectionError Code IndicatorLit Receptacle BayWeather-Proof Clamshell Receptacle Bay DoorTamper-Proof SecurityEnergy Use MeterGlowing White Indicator to indicate safe and normal power conditionsPatented Replaceable Surge ModuleBuilt-In Bluetooth and WiFi to monitor your RV from anywhere in the worldPatented Side Entry ReceptacleAutomatically shuts down power if voltage drops below 104 or above 132 volts. Once power conditions are stable for at least 90 seconds, the unit will turn back on automatically.Remote Power On/Off

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Hughes Autoformer Pwd30Epow Power Watchdog Gen Ii Wifi Smart Surge Protector With Auto Shutoff, 30A Portable - Pwd30Epow - 977-Pwd30Epowf1

Power Watchdog
$440.22

The second-generation Power Watchdog introduces an innovative new design that sets it apart from any other surge protector on the market. The Power Watchdog offers enhanced weather protection, improved security, and unmatched user-friendliness. The addition of built-in WiFi, which complements its existing Bluetooth technology. This integration allows RVers to stay connected and in control from anywhere in the world without the need for extra hardware. Patented, replaceable surge module. In the event of severe power spikes, users can simply replace the module instead of the entire unit. Instant Problem DetectionError Code IndicatorLit Receptacle BayWeather-Proof Clamshell Receptacle Bay DoorTamper-Proof SecurityEnergy Use MeterGlowing White Indicator to indicate safe and normal power conditionsPatented Replaceable Surge ModuleBuilt-In Bluetooth and WiFi to monitor your RV from anywhere in the worldPatented Side Entry ReceptacleAutomatically shuts down power if voltage drops below 104 or above 132 volts. Once power conditions are stable for at least 90 seconds, the unit will turn back on automatically.Remote Power On/Off

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Hughes Autoformer Pwd30W Power Watchdog Gen Ii Wifi Smart Surge Protector, 30A Portable - Pwd30W - 977-Pwd30Wf1

Power Watchdog
$220.20

The second-generation Power Watchdog introduces an innovative new design that sets it apart from any other surge protector on the market. The Power Watchdog offers enhanced weather protection, improved security, and unmatched user-friendliness. The addition of built-in WiFi, which complements its existing Bluetooth technology. This integration allows RVers to stay connected and in control from anywhere in the world without the need for extra hardware. Patented, replaceable surge module. In the event of severe power spikes, users can simply replace the module instead of the entire unit. Instant Problem DetectionError Code IndicatorLit Receptacle BayWeather-Proof Clamshell Receptacle Bay DoorTamper-Proof SecurityEnergy Use MeterGlowing White Indicator to indicate safe and normal power conditionsPatented Replaceable Surge ModuleBuilt-In Bluetooth and WiFi to monitor your RV from anywhere in the worldPatented Side Entry Receptacle

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Hughes Autoformer Pwd50Epohw Power Watchdog Gen Ii Wifi Smart Surge Protector With Auto Shutoff, 50A Hardwired - Pwd50Epohw - 977-Pwd50Epohwf1

Power Watchdog
$484.21

Instant Problem DetectionError Code IndicatorLit Receptacle BayWeather-Proof Clamshell Receptacle Bay DoorTamper-Proof SecurityEnergy Use MeterGlowing White Indicator to indicate safe and normal power conditionsPatented Replaceable Surge ModuleBuilt-In Bluetooth and WiFi to monitor your RV from anywhere in the worldPatented Side Entry ReceptacleAutomatically shuts down power if voltage drops below 104 or above 132 volts. Once power conditions are stable for at least 90 seconds, the unit will turn back on automatically.Remote Power On/Off

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Hughes Autoformer Pwd50Epow Power Watchdog Gen Ii Wifi Smart Surge Protector With Auto Shutoff, 50A Portable - Pwd50Epow - 977-Pwd50Epowf1

Power Watchdog
$528.19

The second-generation Power Watchdog introduces an innovative new design that sets it apart from any other surge protector on the market. The Power Watchdog offers enhanced weather protection, improved security, and unmatched user-friendliness. The addition of built-in WiFi, which complements its existing Bluetooth technology. This integration allows RVers to stay connected and in control from anywhere in the world without the need for extra hardware. Patented, replaceable surge module. In the event of severe power spikes, users can simply replace the module instead of the entire unit. Instant Problem DetectionError Code IndicatorLit Receptacle BayWeather-Proof Clamshell Receptacle Bay DoorTamper-Proof SecurityEnergy Use MeterGlowing White Indicator to indicate safe and normal power conditionsPatented Replaceable Surge ModuleBuilt-In Bluetooth and WiFi to monitor your RV from anywhere in the worldPatented Side Entry ReceptacleAutomatically shuts down power if voltage drops below 104 or above 132 volts. Once power conditions are stable for at least 90 seconds, the unit will turn back on automatically.Remote Power On/Off

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Hughes Dvm1221 Classic Digital Ac Voltmeter - Dvm1221 - 977-Dvm1221F1

Power Watchdog
$25.55

Use this device to monitor your voltage with digital accuracy. Voltage below 108 or above 132, can damage your electrical devices. Simply plug in to any outlet in your RV to measure AC voltage. Also suitable for boat/marine, household or office usage! Measuring range: AC current from 90 - 132 Volts.

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Hughes Dvmdual Dual Color Digital Ac Voltmeter - Dvmdual - 977-Dvmdualf1

Power Watchdog
$30.01

See if you are getting proper voltage with just a glance! The dual color digital voltmeter is highly accurate. If the LED light is green, this means your voltage is in an acceptable range. If the LED light is red, the voltage may be damaging to your RV! Simply plug in to any outlet in your RV to measure AC voltage. Also suitable for boat/marine, household or office usage! Measuring range: AC current from 90 - 132 Volts.

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Hughes Gnbplug Ground Neutral Bonded Plug - Gnbplug - 977-Gnbplugf1

Power Watchdog
$21.08

For use with generators with an 'open neutral or floating neutral'. 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. To correct this issue, simply plug this item into an unused 15A AC receptacle on the generator. This should create a neutral to ground bond and the condition should be resolved.

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Hughes Lock Autoformer Security Cable Lock - Lock - 977-Lockf1

Power Watchdog
$12.06

Simple security cable with key to help prevent theft of your units. Heavy duty braided stainless steel cableTwo keys included1/4" x 40" long jacketed cable

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Hughes Pwd30 Power Watchdog Smart Surge Protector, 30 Amp - Pwd30 - 977-Pwd30F1

Power Watchdog
$179.64

Power Watchdog Smart Surge Protector offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit.Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyComplete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwd30Epo Power Watchdog Smart Surge Protector With Auto Shutoff, Portable, 30 Amp - Pwd30Epo - 977-Pwd30Epof1

Power Watchdog
$389.21

Offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach. It features advanced circuit analysis to automatically shut off power in an emergency and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit. (order online)Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyPlug-n-Play ensures a minimal 4-second power-on analysis to determine if power conditions are safe, while other brands can take up to two minutes.Protect Your Appliances with a built-in 90-second power-on delay after a fault is detected and resolved.Complete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwd30Epoh Power Watchdog Smart Surge Protector With Auto Shutoff, Hardwire, 30 Amp - Pwd30Epoh - 977-Pwd30Epohf1

Power Watchdog
$378.66

Offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach. It features advanced circuit analysis to automatically shut off power in an emergency and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit. (order online)Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyPlug-n-Play ensures a minimal 4-second power-on analysis to determine if power conditions are safe, while other brands can take up to two minutes.Protect Your Appliances with a built-in 90-second power-on delay after a fault is detected and resolved.Complete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwd50 Power Watchdog Smart Surge Protector, 50 Amp - Pwd50 - 977-Pwd50F1

Power Watchdog
$284.42

Power Watchdog Smart Surge Protector offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit.Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyComplete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwd50Epo Power Watchdog Smart Surge Protector With Auto Shutoff, Portable, 50 Amp - Pwd50Epo - 977-Pwd50Epof1

Power Watchdog
$473.66

Offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach. It features advanced circuit analysis to automatically shut off power in an emergency and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit. (order online)Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyPlug-n-Play ensures a minimal 4-second power-on analysis to determine if power conditions are safe, while other brands can take up to two minutes.Protect Your Appliances with a built-in 90-second power-on delay after a fault is detected and resolved.Complete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwd50Epoh Power Watchdog Smart Surge Protector With Auto Shutoff, Hardwire, 50 Amp - Pwd50Epoh - 977-Pwd50Epohf1

Power Watchdog
$440.79

Offers 3,000(30A) & 6,100(50A) Joules of advanced surge protection for your coach. It features advanced circuit analysis to automatically shut off power in an emergency and includes our patented Bluetooth connectivity so you can monitor live park power conditions on your smartphone using our free mobile app. Replaceable Surge / Spike Module - should you get hit by a large spike, simply order a new surge module rather than replacing the entire unit. (order online)Wirelessly Monitor voltage, amperage, and wattage on your smartphone in real time using our free mobile app!Limited Lifetime WarrantyPlug-n-Play ensures a minimal 4-second power-on analysis to determine if power conditions are safe, while other brands can take up to two minutes.Protect Your Appliances with a built-in 90-second power-on delay after a fault is detected and resolved.Complete LED Park Power Diagnostics with wireless fault alerts ensure you are aware of any hazardous park power conditions.Customizable Alert Thresholds to warn you when conditions fall outside a specified rangeCompatible with "dogbone" adaptersHeavy Duty Construction to withstand everyday use at your campsite Water Resistance: IP65Go GLOBAL - add Wi-Fi/Cellular capabilities using the RVWhisper add-on option and monitor your unit from miles away! Visit www.rvwhisper.com for more details.

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Hughes Pwdcover Dimmer Shade For Power Watchdog - Pwdcover - 977-Pwdcoverf1

Power Watchdog
$4.93

For use with either the PWD30-EPO or PWD50-EPO Power Watchdog units. Whether you are a stargazer or concerned over too much light, this screen cover will reduce the light output. This shade sticks to the front of your EPO unit with 3M adhesive. Fits either PWD30-EPO or PWD50-EPO units.Easy 'pick and stick' screen saver style designEffectively reduces the brightness of the light of the 'dogs' face

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Hughes Rsp30 Autoformer Replacement Surge Module, 30 Amp - Rsp30 - 977-Rsp30F1

Power Watchdog
$56.99

Simple 10 minute installation!

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Hughes Rsp30Pwd Power Watchdog Replacement Surge Module For Pwd30 - Rsp30Pwd - 977-Rsp30Pwdf1

Power Watchdog
$45.02

Simple installation! The only tool required is a Phillips screw driver.2,400 Joules Surge Protection.

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Hughes Rsp30Pwdepo Power Watchdog Replacement Surge Module For Pwd30-Epo/Pwd30-Epo-H - Rsp30Pwdepo - 977-Rsp30Pwdepof1

Power Watchdog
$45.02

Simple installation! The only tool required is a Phillips screw driver.2,400 Joules Surge Protection.

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Hughes Rsp50 Autoformer Replacement Surge Module, 50 Amp - Rsp50 - 977-Rsp50F1

Power Watchdog
$89.77

Simple 10 minute installation!

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Hughes Rsp50Pwd Power Watchdog Replacement Surge Module For Pwd50 - Rsp50Pwd - 977-Rsp50Pwdf1

Power Watchdog
$55.47

Simple installation! The only tool required is a Phillips screw driver.4,800 Joules Surge Protection.

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Hughes Rsp50Pwdepo Power Watchdog Replacement Surge Module For Pwd50-Epo/Pwd50-Epo-H - Rsp50Pwdepo - 977-Rsp50Pwdepof1

Power Watchdog
$55.47

Simple installation! The only tool required is a Phillips screw driver.4,800 Joules Surge Protection.

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Hughes Rvbrkt Autoformer Mounting Bracket For 30A Or 50A Autoformer - Rvbrkt - 977-Rvbrktf1

Power Watchdog
$59.84

Works with either 30 amp or 50 amp Autoformers. Made from heavy duty metal, buckles and foam padding, this mounting bracket allows you to mount the Autoformer on a wall, or on the floor of a compartment. The kit comes with everything you need to assemble the bracket for either the 30 amp Autoformers or the 50 amp Autoformers.

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Hughes Rvm21S Rv Whisper Monitor Station - Rvm21S - 977-Rvm21Sf1

Power Watchdog
$323.47

Allows you to get alerts from any Power Watchdog product from miles away!How it works: Uses internet access (WiFi). This can be either 'camp' WiFi, or a personal jet pack set up. Once connected the system then links to your Power Watchdog unit. Once completely set up, the data; watts, volts, amps, and power alerts will be sent to the RV WHISPER system, from there it will be sent to the 'cloud'. This allows you to get emails, text alerts, and or log in to see in real time your volts, watts, amps, and if there are any power issues at your RV. Allows remote viewing and access to your Power Watchdog from miles away! Get texts, emails, or log in remotely outside of Bluetooth rangeWorks with ANY Power Watchdog unitPerfect for Pet Owners - get an alert to your phone if your RV has a power issue and you are away. Keep them safe on hot summer days! Kit comes with temperature/humidity sensor - instantly see the temperature in Fahrenheit and your relative humidityPerfect for RV Storage. It enables you to monitor your power conditions for charging your batteries while your RV is in storage, even if miles awayExpandable system - RV WHISPER offers other sensors - door latch sensor, propane tank level, black and grey tank sensors, motion sensors, and more

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Hughes Rvstnd Autoformer Stand For 30A Or 50A Autoformer - Rvstnd - 977-Rvstndf1

Power Watchdog
$37.52

For use with the either 30 Amp or 50 Amp autoformers. Made from heavy duty ABS plastic material, this stand will keep your autoformer elevated up and out of dirt, mud or puddles. There are grooves and holes to channel any water away from the unit. It helps keep the unit from tipping over. It can be mounted inside your RV and has four screw holes to secure this to the floor in your RV. The included bungee strap will hold the autoformer in place while travelling. Keeps the unit secure and in place.

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Hughes Sv30Api Safeview Smart Rv Power Inlet, 30A. Black - Sv30Api - 977-Sv30Apif1

Power Watchdog
$166.24

SafeViewTM Power Inlets feature a smart circuit sensor that when you plug into shore power, you can see if your circuit wiring is good (all green lights). If there is a fault detected a dedicated letter will light up red. G - Ground L - Line N - Neutral Detects reversed polarityNickel plated contactsGlass impregnated fire retarding nylon plasticCustomizable stainless-steel faceplateHi-pot safe testing2-year warrantyRed/Green LED circuit fault lightsLED "Halo" backlight- solid white color is good, flashing red indicates an issue is detectedETL certifiedWeather ResistantAutomatic detecting missing ground, missing neutral, line and neutral reversed, etc.

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Hughes Sv30Apiw Safeview Smart Rv Power Inlet, 30A. White - Sv30Api-W - 977-Sv30Apiwf1

Power Watchdog
$141.54

Works with ALL 30 Amp 3 Prong Twist Lock RV Power Cords. Twist lock design. Detects reversed polaritySoft glowing 'halo' light, if it is solid white, the wiring in the pedestal is correctEasy to read blinking Red/Green LED circuit lights. Green is good, if the letter is blinking red it means a fault is detected.Universal installation - no special tools are required. This works as a universal RV power inlet, available in both 30A and 50A versions.Water resistant cover. Nickel plated contacts

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Hughes Sv50Api Safeview Smart Rv Power Inlet, 50 Amp - Sv50Api - 977-Sv50Apif1

Power Watchdog
$147.81

SafeViewTM Power Inlets feature a smart circuit sensor that when you plug into shore power, you can see if your circuit wiring is good (all green lights). If there is a fault detected a dedicated letter (or two 50A) will light up red. G - Ground L - Line L2 - Line 2 N - Neutral Detects reversed polarityNickel plated contactsGlass impregnated fire retarding nylon plasticCustomizable stainless-steel faceplateHi-pot safe testing2-year warrantyRed/Green LED circuit fault lightsLED "Halo" backlight- solid white color is good, flashing red indicates an issue is detectedETL certifiedWeather ResistantAutomatic detecting missing ground, missing neutral, line and neutral reversed, etc.

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Hughes Sv50Apiw Safeview Smart Rv Power Inlet, 50A. White - Sv50Api-W - 977-Sv50Apiwf1

Power Watchdog
$158.93

Soft glowing 'halo' light, if it is solid white, the wiring in the pedestal is correct.Automatic detecting, just connect your shore cable.Easy to read blinking Red/Green LED circuit lights. Green is good, if the letter is blinking red it means a fault is detectedUniversal installation - no special tools are required. This works as a universal RV power inlet, available in both 30A and 50A versionsWater resistant cover Nickel plated contactsTwist lock design

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Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of OEM and premium aftermarket marine and RV parts and accessories. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.