85mm Digital GPS Speedometer Odometer | Universal 12V 24V for Car Boat Motorcycle

Get accurate speed, distance, and heading data on any vehicle with this 85mm digital GPS speedometer. It works with 12V and 24V systems, making it a versatile choice for cars, boats, and motorcycles. The large TFT screen is easy to read, and the IP67 waterproof rating ensures reliable performance in tough conditions.

This GPS speedometer measures speed over ground (SOG), trip distance, and total accumulated mileage (ODO). It also shows your heading with an 8-direction navigation pointer. You can switch between km/h, mph, and knots with a quick press of the mode button. The built-in voltmeter monitors your battery voltage from 9V to 32V, so you always know your system's status.

The included 3-meter GPS antenna makes installation flexible, and the unit searches for a GPS signal within 300 seconds. A clear digital countdown and flashing "GPS" indicator let you know when the signal is locked. If there is an issue, error codes like E01, E02, and E03 help you troubleshoot quickly.

Built from stainless steel, plastic, and glass, this speedometer is designed to handle harsh environments. It operates in temperatures from -20 to 70 degrees Celsius and stores safely between -30 and 80 degrees Celsius. The simple two-wire connection (red for power, blue for ground) makes installation straightforward for most users.

Key Features and Benefits

- GPS-based speed measurement that shows SOG, trip, and ODO data so you get reliable information without mechanical sensors

• Universal 12V and 24V compatibility that works with cars, boats, and motorcycles for broad vehicle support

• IP67 waterproof rating that protects the unit from water and dust for dependable use in outdoor and marine environments

• Switchable speed units (km/h, mph, knots) that let you choose your preferred measurement system easily

• Built-in voltmeter that monitors battery voltage from 9V to 32V so you can keep an eye on your electrical system

• 8-direction navigation pointer that shows your heading relative to true north for better situational awareness

Who Is This For

- Boat owners who need a waterproof GPS speedometer that can handle saltwater and spray

• Motorcycle riders looking for a compact, vibration-resistant digital speed display

• Car enthusiasts who want to upgrade from a mechanical speedometer to a more accurate GPS-based unit

• Off-road vehicle users who travel in areas where traditional speed sensors may not work

Usage Scenario

Mark takes his fishing boat out on the lake every weekend. His old mechanical speedometer stopped working after a storm, leaving him guessing his speed. He installed this 85mm GPS speedometer and connected it to his 12V battery. Within a few minutes, the GPS signal locked, and the TFT screen showed his speed in knots. Now he knows exactly how fast he is going and can track his trip distance. The waterproof design gives him peace of mind even when water splashes over the dash.

Micro Comparison

Unlike traditional speedometers that rely on wheel or propeller sensors, this GPS unit measures speed directly from satellite signals. That means no moving parts to wear out and no calibration needed. It also adds useful features like a voltmeter and heading display that standard mechanical gauges do not offer.

Specifications

Material: Stainless steel + plastic + glass

Screen size: 85mm

Working voltage: 9~32VDC

Working current: less than 120mA

Working temperature: -20 to 70 degrees Celsius

Storage temperature: -30 to 80 degrees Celsius

Waterproof rating: IP67

Speed range: 0~999 km/h, mph, knots

ODO range: 0~999999 km, miles, knots

Trip range: 0~999.9 km, mph, knots

Voltage range: 8-32V

GPS antenna length: 3 meters

Package Includes

- 1 x GPS Speedometer

• 1 x GPS Antenna

• 1 x Instruction manual

Why You Will Love It

You get a reliable, accurate speed reading without complicated installation. The large digital display is easy to see at a glance, and the waterproof build means it will last through rain, spray, and dust. Whether you are on the water or the road, this speedometer gives you the data you need to drive with confidence.

Questions and Answers

Question: How long does it take to find a GPS signal?

Answer: The unit typically finds a GPS signal within 300 seconds after powering on.

Question: Can I use this on a 24V system?

Answer: Yes, it works with both 12V and 24V electrical systems.

Question: What does error code E02 mean?

Answer: Error E02 means the GPS signal was lost while the unit was operating.

Question: Does the ODO data save after power is turned off?

Answer: Yes, the ODO (accumulated mileage) is saved when the power is off.

Question: Can I switch between km/h and mph?

Answer: Yes, you can quickly press the mode button to switch between km/h, mph, and knots.