💸 Do you have examples of bad vehicles?
- This $31,000 Porsche Panamera Scam Was Drowned And Rolled BackDoes the water actually smell? Another example of a really bad deal.
- 2016 BMW i8 For $35,000: Scam or Score?This luxury BMW has changed not only its color but also odometer value.
- This Nissan Armada Just Keeps Getting Younger...Or Does It?Bought wrecked for $725 with 202k miles, on salvage auction again with 150k miles.
- Title Washing Maserati MoneypitSalvage Grand Turismo with odometer rolled back several times within a few years.
- 2014 JEEP WRANGLERSalvage title with blown airbags. Fully fixed with suspicious odometer.
- 2005 TOYOTA TACOMABought for $4k with 279k miles, cleaned, and on sale for $7k with 96k miles.
- 2005 DODGE MAGNUMTwo salvage auctions within a year. Odometer changed from 232k mi to 118k mi.
- 2005 BMW X3Salvaged several times within a year. Odometer rolled back after the accident.
- 2015 HONDA CROSSTOUROdometer was potentially rolled back from 78k mi to 36k mi.
- 2014 PORSCHE CAYENNE
- 2016 NISSAN SENTRA
All info from Basic Report
Full list of events (better than CARFAX)
Odometer readings from DMV
Save up to $65 on CARFAX and AutoCheck
100% satisfaction guarantee
8 sale reports from different sources
62 actual photos
Odometer readings from sales
Bids and final prices
Real sale descriptions
Not enough reasons to want it? Try to click here.
Why BADVIN is better than other VIN reports?
We give you not only record like a car was at some auction on some date, we give you exact price how much it was sold for, we show you pictures that were used on that auction. So will be able to see how car looked some time ago.
Also we include all events for this VIN, so you will get most of following information:
- Vehicle Specifications
- Title Records and Title Checks
- Junk, Salvage
- Lien, Impound and Theft Records
- Insurance Records
- Owner History, Registered State
- Many other important records
We guarantee that our events list contains all information you need to make a decision about buying the car. If you find our Premium Report not sufficient enough, MONEY BACK GUARANTEED.
Would like to see some examples before purchase? Click here.
- This $31,000 Porsche Panamera Scam Was Drowned And Rolled BackDoes the water actually smell? Another example of a really bad deal.
- 2016 BMW i8 For $35,000: Scam or Score?This luxury BMW has changed not only its color but also odometer value.
- This Nissan Armada Just Keeps Getting Younger...Or Does It?Bought wrecked for $725 with 202k miles, on salvage auction again with 150k miles.
- Title Washing Maserati MoneypitSalvage Grand Turismo with odometer rolled back several times within a few years.
- 2014 JEEP WRANGLERSalvage title with blown airbags. Fully fixed with suspicious odometer.
- 2005 TOYOTA TACOMABought for $4k with 279k miles, cleaned, and on sale for $7k with 96k miles.
- 2005 DODGE MAGNUMTwo salvage auctions within a year. Odometer changed from 232k mi to 118k mi.
- 2005 BMW X3Salvaged several times within a year. Odometer rolled back after the accident.
- 2015 HONDA CROSSTOUROdometer was potentially rolled back from 78k mi to 36k mi.
- 2014 PORSCHE CAYENNE
- 2016 NISSAN SENTRA
If you want to get full information about the car, your best option is Premium Report for $5.99+.
If you need only sale information, your best choice is Basic Report. You won't get detailed list of events but you will get all photos and other data from all sales that we have for this vehicle. Basic reports available only for dealer membership.
Summary for VIN 1C4HJXFG7JW101578
Make | JEEP |
Model | WRANGLER UNLIMITED |
Trim | RUBICON |
Body Style | SUV |
Color | Billet Silver Metallic Clearcoat |
Color (Interior) | black |
Transmission | 8-Speed Automatic |
Engine | 3.6L V6 24V VVT |
Drive | 4WD |
Fuel Type | Gasoline |
VIN Decoder — 51 records
Anti-lock Braking System (ABS) means a portion of a service brake system that automatically controls the degree of rotational wheel slip during braking by: (1) Sensing the rate of angular rotation of the wheels; (2) Transmitting signals regarding the rate of wheel angular rotation to one or more controlling devices that interpret those signals and generate responsive controlling output signals; and (3) Transmitting those controlling signals to one or more modulator devices that adjust brake actuating forces in response to those signals.
ESC is a computerized technology that improves a vehicle's stability by detecting and reducing loss of traction (skidding). When ESC detects loss of steering control, it automatically applies the brakes to help steer the vehicle in the driver's intended direction. Braking is automatically applied to wheels individually, such as the outer front wheel to counter oversteer, or the inner rear wheel to counter understeer. Some ESC systems also reduce engine power until control is regained.
A keyless ignition system permits starting a car without a physical key being inserted into an ignition. Instead, a small device known as a "key fob" transmits a code to a computer in the vehicle when the fob is within a certain close range. When the coded signal matches the code embedded in the vehicle's computer, a number of systems within the car are activated, including the starter system. This allows the car to be started by simply pressing a button on the dashboard while the key fob is left in a pocket or a purse. The vehicle is usually shut down by pushing the same button.
A TPMS is an electronic system designed to monitor the air pressure inside the pneumatic tires on various types of vehicles. TPMS can be divided into two different types - direct and indirect. Direct TPMS employ pressure sensors on each wheel, either internal or external. The sensors physically measure the tire pressure in each tire and report it to the vehicle's instrument cluster or a corresponding monitor. Indirect TPMS does not use physical pressure sensors but measure air pressures by monitoring individual wheel rotational speeds and other signals available outside of the tire itself.
When the traction control computer detects a driven wheel or wheels spinning significantly faster than another, it invokes an electronic control unit to apply brake friction to wheels spinning due to loss of traction. This braking action on slipping wheels will cause power transfer to the wheels with traction due to the mechanical action within the differential.
A backup camera, also known as a rearview video system, helps prevent back-over crashes and protects our most vulnerable people - children and senior citizens - by providing an image of the area behind the vehicle. A backup camera helps the driver see behind the vehicle while in reverse.
Engine displacement (in cubic centimeters) is the volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead center to bottom dead center.
Engine displacement (in cubic inches) is the volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead center to bottom dead center.
Engine displacement (in liters) is the volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead center to bottom dead center.
Engine brake is the horsepower (hp) at the engine output shaft. Engine Brake (hp) From is the lower value of the range.
Engine configuration defines how engine cylinders are arranged. Common values are V6 for V-shaped arrangement, I4 or L4 for in-line arrangement.
This is a numerical field to store the number of cylinders in an engine. Common values for passenger cars are 4 or 6.
Body Class presents the body type based on 49 CFR 565.12(b): "Body type means the general configuration or shape of a vehicle distinguished by such characteristics as the number of doors or windows, cargo-carrying features and the roofline (e.g., sedan, fastback, hatchback)." Definitions are not provided for individual body types in the regulation.
Gross vehicle weight rating (GVWR) is the maximum operating weight of a vehicle including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo, but excluding that of the trailers. Per 49 CFR 565.15, Class 1 is further broken down to Class A-D; Class 2 is further broken down to Class E-H. This field captures the lower bound of GVWR range for the vehicle.
Base price of the vehicle is the cost of a new vehicle with only the standard equipment and factory warranty. It is the cost without any optional packages.
Per 49 CFR 565, Model means a name that a manufacturer applies to a family of vehicles of the same type, make, line, series and body type.
If the model year (MY) is supplied when the VIN is decoded, such as from a crash report or a vehicle registration record, the MY value will be the supplied MY, even if the MY decoded from the VIN differs from the supplied MY. If the MY is not supplied when the VIN is decoded, the MY value will be decoded from the 10th character in the VIN.
This data element captures the city of the manufacturing plant where the manufacturer affixes the VIN.
This data element captures the name of the company that owns the manufacturing plant where the manufacturer affixes the VIN.
This data element captures the country of the manufacturing plant where the manufacturer affixes the VIN.
This data element captures the State or Province name within the Plant Country of the manufacturing plant where the manufacturer affixes the VIN.
Per 49 CFR 565, Series means a name that a manufacturer applies to a subdivision of a "line" denoting price, size or weight identification and that is used by the manufacturer for marketing purposes.
BADVIN Premium Report
Window Sticker
Sale Record — a year ago in Wenatchee, WA, 98801
Year | 2018 |
ODO | 6364 mi |
Seller | Hidden text (Hidden text) |
Location | Wenatchee, WA, 98801 |
Date | appeared a year ago latest price $7682 sale post disappeared 2019-06-02 |
Price History | |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Color | Billet Silver Metallic Clearcoat |
Color (Interior) | Tan |
Transmission | 8-SPEED A/T |
Engine | 3.6L V6 24V VVT |
Drive | Four-wheel Drive |
Fuel Type | Gasoline |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Standard Features
- 2 Seatback Storage Pockets
- 7171
- 6-Way Driver Seat -inc: Manual Recline Height Adjustment Fore/Aft Movement a...
- 3020
- Air Conditioning
- Hidden text
- Auxiliary Switches
- Hidden text
- Brake Actuated Limited Slip Differential
- Hidden text
- Deep Tinted Glass
- Hidden text
- Dual Front Impact Airbags
- Hidden text
- Freedom Panel Storage Bag
- Hidden text
- Front reading lights
- Hidden text
- HD Shock Absorbers
- Hidden text
- Leather Steering Wheel
- Hidden text
- Outboard Front Lap And Shoulder Safety Belts -Inc: Rear Center 3 Point Heigh...
- Hidden text
- Perimeter Alarm
- Hidden text
- Radio data system
- Hidden text
- Remote Keyless Entry W/Integrated Key Transmitter Illuminated Entry And Pani...
- Hidden text
- Split folding rear seat
- Hidden text
- Traction Control
- Hidden text
- 2 12V DC Power Outlets and 1 120V AC Power Outlet
- 9213
- 5 Skid Plates
- 2606
- ABS Brakes
- Hidden text
- Auto On/Off Aero-Composite Halogen Daytime Running Headlamps w/Delay-Off
- Hidden text
- Body color fender flares
- Hidden text
- Cruise Control w/Steering Wheel Controls
- Hidden text
- Dual Stage Driver And Passenger Front Airbags
- Hidden text
- Fade-To-Off Interior Lighting
- Hidden text
- Front Dual Zone A/C
- Hidden text
- Garage Door Transmitter
- Hidden text
- Interior Trim -Inc: Colored Instrument Panel Insert Metal-Look Door Panel In...
- Hidden text
- Non-Lock Fuel Cap w/o Discriminator
- Hidden text
- Passenger Vanity Mirror
- Hidden text
- Proximity Key For Push Button Start Only
- Hidden text
- Rear reading lights
- Hidden text
- Solid Axle Rear Suspension w/Coil Springs
- Hidden text
- Tire Specific Low Tire Pressure Warning
- Hidden text
- Voltmeter
- 7458
- 4-Wheel Disc Brakes w/4-Wheel ABS Front Vented Discs Brake Assist and Hill H...
- 8144
- 892# Maximum Payload
- Hidden text
- Apple Carplay/Android Auto
- Hidden text
- Black Side Windows Trim
- Hidden text
- Compass
- Hidden text
- Driver Door Bin
- Hidden text
- Engine Oil Cooler
- Hidden text
- Front Seats w/Cloth Back Material and Manual Driver Lumbar
- Hidden text
- Galvanized Steel/Aluminum/Magnesium Panels
- Hidden text
- Instrument Panel Bin Dashboard Storage Driver / Passenger And Rear Door Bins...
- Hidden text
- Manual Tilt/Telescoping Steering Column
- Hidden text
- Part-Time Four-Wheel Drive
- Hidden text
- Power Windows
- Hidden text
- Rear window wiper/washer
- Hidden text
- Single Stainless Steel Exhaust
- Hidden text
- Telescoping Steering Wheel
- Hidden text
- Variably Intermittent Wipers
- 6717
- 4-Way Passenger Seat -inc: Manual Recline and Fore/Aft Movement
- 5131
- 700 Amp Maintenance Free Battery
- Hidden text
- Aluminum Spare Wheel
- Hidden text
- Black Power Heated Side Mirrors w/Manual Folding
- Hidden text
- Class II Receiver Hitch
- Hidden text
- Driver Selectable Front Locking Differential
- Hidden text
- Electronic Stability Control (ESC) And Roll Stability Control (RSC)
- Hidden text
- Front Center Armrest w/Storage
- Hidden text
- Fully Automatic Headlights
- Hidden text
- Illuminated Rear Cupholder
- Hidden text
- Low Tire Pressure Warning
- Hidden text
- ParkView Back-Up Camera
- Hidden text
- Power Door Mirrors
- Hidden text
- Rear Child Safety Locks
- Hidden text
- Sentry Key Immobilizer
- Hidden text
- Tachometer
- Hidden text
- Urethane Gear Shifter Material
- Hidden text
- 2 12V DC Power Outlets
- 1058
- 4.10 Rear Axle Ratio
- 1322
- ABS And Driveline Traction Control
- Hidden text
- Auto Locking Hubs
- Hidden text
- Black Wheel Well Trim and Black Fender Flares
- Hidden text
- Conventional Rear Cargo Access
- Hidden text
- Driver Vanity Mirror
- Hidden text
- ENGINE: 3.6L V6 24V VVT UPG I W/ESS
- Hidden text
- Front Anti-Roll Bar
- Hidden text
- Garage Door Transmitter
- Hidden text
- Integrated Roll-Over Protection
- Hidden text
- Manual Transfer Case
- Hidden text
- Passenger Door Bin
- Hidden text
- Premium Cloth Low-Back Bucket Seats
- Hidden text
- Rear Anti-Roll Bar
- Hidden text
- Smart Device Integration
- Hidden text
- Tilt steering wheel
- Hidden text
- Voice Activated Dual Zone Front Automatic Air Conditioning
Sale Record — 2 years ago in Bellevue, WA, 98007
2018 Jeep Wrangler Unlimited Rubicon
Year | 2018 |
ODO | 3732 mi |
Seller | Hidden text (Hidden text) |
Location | Bellevue, WA, 98007 |
Date | appeared 2 years ago latest price $9391 sale post disappeared 2023-06-11 |
Price History | |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Color | Billet Silver Metallic Clear Coat Exterior |
Transmission | 8-Speed Automatic Transmission |
Drive | 4 wheel drive |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Standard Features
- 4682
- Auto Transmission W/Manual Mode
- Hidden text
- Cruise Control
- Hidden text
- Front tow hooks
- Hidden text
- Pass-Through Rear Seat
- Hidden text
- A/C
- Hidden text
- Bucket Seats
- Hidden text
- Dual Zone A/C
- Hidden text
- Keyless Start
- Hidden text
- Power Steering
- Hidden text
- Tire Pressure Monitoring System
- Hidden text
- 4-Wheel Disc Brakes
- Hidden text
- Bluetooth
- Hidden text
- Driver Illuminated Vanity Mirror
- Hidden text
- Heated Mirrors
- Hidden text
- Passenger Vanity Mirror
- Hidden text
- Smart Device Integration
- Hidden text
- Variable Speed Intermittent Wipers
- 9057
- AM/FM Stereo
- Hidden text
- Child Safety Locks
- Hidden text
- Electronic stability control
- Hidden text
- Leather Wrapped Steering Wheel
- Hidden text
- Power Windows
- Hidden text
- Tires - Front All-Terrain
- Hidden text
- 4x4
- Hidden text
- Brake Actuated Limited Slip Differential
- Hidden text
- Driver Lumbar
- Hidden text
- Intermittent Wipers
- Hidden text
- Power Door Locks
- Hidden text
- Steering wheel controls
- Hidden text
- Vehicle anti-theft system
- Hidden text
- Targa Roof
- Hidden text
- iPod/MP3 Input
Sale Record — 2 years ago in Bellevue, WA, 98007
Year | 2018 |
ODO | 7745 mi |
Condition | Hidden text |
Seller | Hidden text |
Location | Bellevue, WA, 98007 |
Date | appeared 2 years ago latest price $2525 |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Body Style | SUV |
Color | Silver |
Color (Interior) | Black |
Transmission | Automatic |
Engine | 3.6 L |
Cylinders | 6 Cyl |
Drive | 4WD |
Fuel Type | Gasoline |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Extra Features
- Alloy Wheels
- Hidden text
- Convertible Top
- Hidden text
- Hard Top
- Hidden text
- Limited Slip Differential
- Hidden text
- Trailer Hitch
- Hidden text
Standard Features
- 4-Wheel Disc Brakes
- Hidden text
- Adjustable Steering Wheel
- Hidden text
- Anti-Lock Brakes
- Hidden text
- Armrest
- Hidden text
- Black Top
- Hidden text
- Child Safety Locks
- Hidden text
- Cruise Control
- Hidden text
- Downhill-Assist Control
- Hidden text
- Dual-Zone Climate Control
- Hidden text
- Front Airbags (Driver)
- Hidden text
- Full Size Spare Tire
- Hidden text
- Heated Mirrors
- Hidden text
- Intermittent Wipers
- Hidden text
- Leather Steering Wheel
- Hidden text
- MP3
- Hidden text
- Off-Road Tires
- Hidden text
- Power Locks
- Hidden text
- Power Steering
- Hidden text
- Privacy Glass
- Hidden text
- Rear Window Wiper
- Hidden text
- Rollover Protection Bars
- Hidden text
- Side Airbag
- Hidden text
- Stability Control
- Hidden text
- Targa Top
- Hidden text
- Tire Pressure Monitoring System
- Hidden text
- Trip Computer
- Hidden text
- Wheel Locks
- Hidden text
Sale Record — 2 years ago in Bellevue, WA, 98007
2018 Jeep Wrangler Unlimited Rubicon
Year | 2018 |
ODO | 3261 mi |
Seller | Hidden text (Hidden text) |
Location | Bellevue, WA, 98007 |
Date | appeared 2 years ago latest price $1372 sale post disappeared 2022-12-02 |
Price History | |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Color | Billet Silver Metallic Clear Coat Exterior |
Transmission | 8-Speed Automatic Transmission |
Drive | 4 wheel drive |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Standard Features
- 1459
- AM/FM Stereo
- Hidden text
- Child Safety Locks
- Hidden text
- Electronic stability control
- Hidden text
- Leather Wrapped Steering Wheel
- Hidden text
- Power Windows
- Hidden text
- Tires - Front All-Terrain
- Hidden text
- 8-Speed A/T
- Hidden text
- Brake Assist
- Hidden text
- Driver Vanity Mirror
- Hidden text
- Keyless Entry
- Hidden text
- Power Driver Mirror
- Hidden text
- Targa Roof
- Hidden text
- iPod/MP3 Input
- Hidden text
- Auto-off headlights
- Hidden text
- Daytime Running Lights
- Hidden text
- Full size spare tire
- Hidden text
- Passenger Air Bag
- Hidden text
- Satellite Radio
- Hidden text
- Universal Garage Door Opener
- 7143
- Adjustable Steering Wheel
- Hidden text
- Cloth Seats
- Hidden text
- Fog Lamps
- Hidden text
- Locking rear differential
- Hidden text
- Privacy Glass
- Hidden text
- Tires - Rear All-Terrain
- Hidden text
- 4x4
- Hidden text
- Brake Actuated Limited Slip Differential
- Hidden text
- Driver Lumbar
- Hidden text
- Intermittent Wipers
- Hidden text
- Power Door Locks
- Hidden text
- Steering wheel controls
- Hidden text
- Vehicle anti-theft system
Sale Record — 2 years ago in Bellevue, WA, 98007
Year | 2018 |
ODO | 6451 mi |
Condition | Hidden text |
Seller | Hidden text |
Location | Bellevue, WA, 98007 |
Date | appeared 2 years ago latest price $7673 |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Body Style | SUV |
Color | Silver |
Color (Interior) | Black |
Transmission | Automatic |
Engine | 3.6 L |
Cylinders | 6 Cyl |
Drive | 4WD |
Fuel Type | Gasoline |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Extra Features
- Alloy Wheels
- Hidden text
- Convertible Top
- Hidden text
- Hard Top
- Hidden text
- Limited Slip Differential
- Hidden text
- Trailer Hitch
- Hidden text
Standard Features
- 4-Wheel Disc Brakes
- Hidden text
- Adjustable Steering Wheel
- Hidden text
- Anti-Lock Brakes
- Hidden text
- Armrest
- Hidden text
- Black Top
- Hidden text
- Child Safety Locks
- Hidden text
- Cruise Control
- Hidden text
- Downhill-Assist Control
- Hidden text
- Dual-Zone Climate Control
- Hidden text
- Front Airbags (Driver)
- Hidden text
- Full Size Spare Tire
- Hidden text
- Heated Mirrors
- Hidden text
- Intermittent Wipers
- Hidden text
- Leather Steering Wheel
- Hidden text
- MP3
- Hidden text
- Off-Road Tires
- Hidden text
- Power Locks
- Hidden text
- Power Steering
- Hidden text
- Privacy Glass
- Hidden text
- Rear Window Wiper
- Hidden text
- Rollover Protection Bars
- Hidden text
- Side Airbag
- Hidden text
- Stability Control
- Hidden text
- Targa Top
- Hidden text
- Tire Pressure Monitoring System
- Hidden text
- Trip Computer
- Hidden text
- Wheel Locks
- Hidden text
Sale Record — 5 years ago in Renton, WA, 98057
Year | 2018 |
ODO | 8593 mi |
Seller | Hidden text (Hidden text) |
Location | Renton, WA, 98057 |
Date | appeared 5 years ago latest price $2354 sale post disappeared 2022-11-18 |
Sale Website Type | classifieds |
Notes | |
Hidden text |
Tech Specs
Body Style | SUV |
Color | Billet Silver Metallic Clearcoat |
Color (Interior) | black |
Transmission | 8-Speed Automatic |
Engine | 3.6L V6 24V VVT |
Drive | 4WD |
Fuel Type | Gasoline |
Photos
All photos below are REAL and display ACTUAL car. After you get the report you will see full resolution photos.
Standard Features
- Audio controls on steering wheel
- Hidden text
- Child Safety Locks
- Hidden text
- Electronic stability control
- Hidden text
- Heated Door Mirrors
- Hidden text
- Occupant Sensing Airbag
- Hidden text
- Power Door Mirrors
- Hidden text
- Security System
- Hidden text
- Auxiliary Input
- Hidden text
- Compass
- Hidden text
- Front Bucket Seats
- Hidden text
- Integrated Roll-Over Protection
- Hidden text
- Panic alarm
- Hidden text
- Power Windows
- Hidden text
- Split folding rear seat
- Hidden text
- TRAILER TOW & HD ELECTRICAL GROUP
- Hidden text
- Automatic Temperature Control
- Hidden text
- Class II Receiver Hitch
- Hidden text
- Four Wheel Drive
- Hidden text
- Illuminated entry
- Hidden text
- Outside temperature display
- Hidden text
- Power Steering
- Hidden text
- Speed control
- Hidden text
- Trailer Hitch
- Hidden text
- Antilock Brakes
- Hidden text
- Brake Assist
- Hidden text
- ENGINE: 3.6L V6 24V VVT UPG I W/ESS
- Hidden text
- Garage Door Transmitter
- Hidden text
- Non-Lock Fuel Cap w/o Discriminator
- Hidden text
- Power Windows
- Hidden text
- Remote Keyless Entry
- Hidden text
- Traction Control
- Hidden text
- Air Conditioning
- Hidden text
- Brake Assist
- Hidden text
- Dual front side impact airbags
- Hidden text
- Fully Automatic Headlights
- Hidden text
- Low Tire Pressure Warning
- Hidden text
- Power Outlet
- Hidden text
- Rear reading lights
- Hidden text
- Tow Hooks
- Hidden text
- Tachometer
- Hidden text
- Voltmeter