12V 24V Digital Water Temperature Gauge with Volt Meter | 2-in-1 Car Gauge with Sensor

Keep an eye on your engine’s vital signs with this 2-in-1 digital gauge that shows water temperature and voltage on a single, easy-to-read LCD screen. Designed for 12V and 24V vehicles, it helps you spot cooling or charging issues before they cause trouble.

This gauge combines a water temperature meter and a voltmeter in one compact unit. The digital display gives you clear, real-time readings so you can monitor engine coolant temperature and battery or alternator voltage at a glance. It works with a included water temperature sensor that installs directly into your radiator hose or adapter, making setup straightforward for most cars, trucks, or off-road vehicles.

The sunshield design improves visibility in bright conditions, so you can read the display even on sunny days. The plastic shell is built to handle the bumps and vibrations of daily driving, while the simple wiring connects to your vehicle’s power supply. With an alarm that flashes when the temperature goes above 95 degrees Celsius, you get an early warning system for overheating.

Whether you are upgrading your dashboard or adding a monitor for peace of mind, this gauge gives you the data you need without clutter. It is a practical tool for anyone who wants to keep their engine running smoothly.

Key Features and Benefits

- Digital LCD display that shows water temperature and voltage together for quick monitoring

• Flashing alarm alerts you when coolant temperature exceeds 95 degrees Celsius to help prevent overheating

• Sunshield design improves screen readability in direct sunlight for safer driving

• Works with both 12V and 24V electrical systems for broad vehicle compatibility

• Includes a water temperature sensor with M10 thread that fits standard radiator hose adapters

• Stable and precise readings with +/-1% accuracy for reliable data you can trust

• Easy installation with color-coded wiring and a 300 cm cable for flexible placement

Who Is This For

- Car owners who want a simple way to monitor engine temperature and battery voltage

• Truck and van drivers operating 12V or 24V systems who need a dual-function gauge

• Off-road and overlanding enthusiasts looking for a durable, easy-to-read monitor

• DIY mechanics installing an aftermarket gauge in a custom dashboard or gauge pod

Usage Scenario

Mark was driving his work van through a long stretch of highway when he noticed the factory temperature gauge was acting sluggish. He had installed this digital 2-in-1 gauge the previous weekend, running the sensor into the radiator hose adapter and wiring it to the fuse box. Halfway up a steep grade, the display flashed, and the temperature reading climbed past 95 degrees Celsius. Mark pulled over immediately, let the engine cool, and found a small coolant leak. The early warning saved him from a blown head gasket and an expensive tow bill.

Micro Comparison

Unlike separate gauges that take up more dashboard space and require extra wiring, this 2-in-1 unit combines temperature and voltage readings in a single compact display. Many basic temperature gauges lack a voltage readout or an alarm feature, so you would not know about an overheating condition until it is too late. This gauge gives you both critical data points and a flashing alert, all in one package that is simpler to install.

Specifications

Digit: 3 Digit

Accuracy: +/-1%

Material: Plastic Shell

Power Supply: DC 9V - 36V

Cable Length: approx. 300 cm / 118.1 in

Product Size: 100 mm x 56 mm / 3.9 in x 2.2 in

Temperature Sensor Screw: M10

Temperature Sensor Screw Diameter: 10 mm / 0.4 in

Water Temperature Measurement Range: -10 to 110 degrees Celsius / 14 to 230 degrees Fahrenheit

Water Temperature Alarm Value: > 95 degrees Celsius / 203 degrees Fahrenheit

Package Includes

- 1x LCD 2-in-1 Car Gauge (Voltage & Water Temperature Gauge)

• 1x Water Temperature Sensor (10 mm)

Why You Will Love It

You get two essential engine monitors in one small gauge, saving space and installation effort. The bright digital display and flashing alarm give you real-time confidence on every drive. It is a practical upgrade that helps you catch problems early and keep your vehicle on the road longer.

Questions and Answers

Question: Can this gauge work on a 12V car battery?

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

Question: What size thread does the temperature sensor use?

Answer: The sensor uses an M10 thread with a 10 mm diameter, which fits standard radiator hose adapters.

Question: Does the gauge come with a wiring harness or just bare wires?

Answer: It comes with color-coded wires (red for power positive, red-black for power negative) that are about 300 cm long for flexible routing.

Question: Can I mount this gauge in a standard 52 mm gauge pod?

Answer: The gauge body is 100 mm by 56 mm, so it is not a standard 52 mm round gauge. You will need a rectangular mounting space or a suitable pod.

Question: What temperature triggers the alarm?

Answer: The alarm flashes when the water temperature reading goes above 95 degrees Celsius (203 degrees Fahrenheit).

Question: Does the sensor need to be grounded separately?

Answer: The sensor connects to the gauge through its wiring. The power negative wire handles the ground connection for the gauge itself.

Question: Is this gauge waterproof or splash-proof?

Answer: The gauge has a plastic shell but is not rated as fully waterproof. It is best installed in a dry location inside the cabin.