Universal 52mm LCD Digital GPS Speedometer with Antenna | MPH Knot Km/h COG Gauge for Car Boat Motorcycle 12V 24V

This 52mm LCD digital GPS speedometer gives you accurate speed readings in MPH, knots, or km/h for your car, boat, or motorcycle. It includes a GPS antenna and works with both 12V and 24V electrical systems. The clear LCD display shows your current speed and course over ground (COG) so you always know how fast you are moving and in which direction.

Installation is straightforward with the included mounting ring and connecting line. The gauge fits into a standard 52mm (2-1/16 inch) panel cutout. Once connected, the GPS antenna picks up satellite signals to deliver real-time speed data without needing a mechanical cable or sensor. You can switch between speed units easily using the external button.

The backlight offers three color options: green, red, and white. This lets you match the gauge to your dashboard or cockpit lighting. The display is easy to read in different lighting conditions, whether you are driving during the day or navigating at night.

This speedometer is a practical upgrade for anyone who needs a reliable, cable-free speed display. It works on a variety of vehicles including cars, trucks, boats, and motorcycles. The universal design and wide voltage range make it a flexible choice for custom builds or replacing old mechanical gauges.

Key Features and Benefits

- GPS satellite signal provides accurate speed data without mechanical cables or sensors

• Three selectable speed units (MPH, knots, km/h) let you use the measurement you prefer

• Course over ground (COG) display shows your direction of travel for better navigation

• Three backlight colors (green, red, white) help match your dashboard or cockpit lighting

• Works on 12V and 24V systems so it fits cars, boats, and motorcycles

• Standard 52mm size fits into most existing gauge panels and dashboards

Who Is This For

- Boat owners who want a cable-free speed display with knot and COG readings

• Motorcycle builders looking for a compact digital speedometer for custom projects

• Car enthusiasts upgrading from a mechanical speedometer to a modern GPS unit

• Anyone who needs a replacement speed gauge that works with both 12V and 24V systems

Usage Scenario

You are restoring an older boat and the original mechanical speedometer is unreliable. You cut a 52mm hole in the dash, insert this GPS speedometer, and tighten the fastening ring. After connecting the wires and placing the GPS antenna where it has a clear view of the sky, you power it on. Within a minute, the display shows your speed in knots and the course over ground. Now you have accurate, cable-free speed data every time you head out on the water.

Micro Comparison

Traditional mechanical speedometers rely on cables and sensors that can wear out or break. This GPS speedometer uses satellite signals, so there are no moving parts to fail. It also offers three backlight colors and a COG display, features not found on basic analog gauges. The ability to switch between MPH, knots, and km/h makes it more versatile for different types of vehicles and uses.

Specifications

- Size: 52mm / 2.05 in diameter

• Weight: 0.2 kg / 7.05 oz

• Voltage: 12V / 24V

• Display: LCD digital with backlight (green, red, white)

• Functions: Speed (MPH, knots, km/h), Course Over Ground (COG)

• Includes: GPS antenna, connecting line, instructions

Size Guide

Please allow 1-3 cm / 0.4-1.2 in difference due to manual measurement.

The gauge requires a 52mm (2-1/16 inch) panel cutout with 55mm (2 3/16 inch) clearance behind the panel.

Package Includes

- 1 x GPS Speedometer

• 1 x GPS Antenna

• 1 x Instructions

• 1 x Connecting line

Why You Will Love It

No more guessing your speed with a worn-out cable or inaccurate gauge. This GPS speedometer gives you real-time, satellite-based readings that update as you move. The color backlight lets you personalize the look, and the simple setup means you can install it yourself in under an hour.

Questions and Answers

Question: Does this speedometer work on a 12V motorcycle?

Answer: Yes, it works on both 12V and 24V systems, so it is suitable for most motorcycles, cars, and boats.

Question: How do I switch between MPH and km/h?

Answer: Press and hold the external button, then turn on the power. The display will show UNIT. Release the button and choose MPH, knots, or km/h. Restart the gauge to save the setting.

Question: Where should I place the GPS antenna?

Answer: Place the antenna where it has a clear view of the sky, such as on the dashboard or deck. Avoid putting it under metal surfaces.

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

Answer: After turning on the power, the gauge usually gets a satellite signal within one minute. The first start may take a little longer.

Question: Can I use this gauge as my only navigation tool?

Answer: All data is for reference only. You should not rely on this gauge as your sole navigation source. Always use official navigation equipment for critical decisions.

Question: What backlight colors are available?

Answer: The backlight has three color options: green, red, and white. You can choose the one that matches your dashboard or personal preference.