3 in 1 Digital 52mm Gauge with Alarm | Water Temperature, Oil Pressure, and Voltmeter

Monitor your engine's vital signs with this 3 in 1 digital gauge. It combines a water temperature gauge, oil pressure meter, and voltmeter into a single 52mm display, giving you real-time data at a glance. Built-in alarm thresholds help you catch problems before they cause damage.

This gauge uses a 100% imported MCU for stable and reliable performance. The housing is made from 316 stainless steel and plastic, designed to resist corrosion in humid or acidic environments. With an IP67 waterproof and dustproof rating, it can handle tough conditions on the road or water.

The high-brightness LED backlight ensures the display is easy to read in any light. The unit also features a sensor disconnect alarm, showing "OFF" on the screen if a sensor fails. This gauge can match many sensor signals, including 0~190 Ω, 240~33 Ω, 0~5 V, 0.5~4.5 V, and 4~20 mA, making it versatile for different setups.

Operating voltage is 9~32 VDC, and the gauge draws ≤60 mA. It works in temperatures from -20 to 70°C and can be stored between -30 to 80°C. The package includes the gauge, wiring harness, and instruction manual. Note: the sensor is sold separately.

Key Features and Benefits

- 3-in-1 design that combines water temperature, oil pressure, and voltage monitoring in one gauge, saving dashboard space and simplifying installation

• Built-in alarm system that triggers alerts for oil temp over 108°C, water temp over 95°C, oil pressure under 0.8 bar, and voltage below 11.5V (12V system) or 22V (24V system), helping you prevent engine damage

• IP67 waterproof and dustproof rating that protects the gauge from water and debris, ensuring reliable operation in marine and off-road environments

• 316 stainless steel construction that resists corrosion in humid, acidic, or salty conditions, extending the life of the gauge

• Sensor disconnect alarm that displays "OFF" on the screen when a sensor fails, so you can quickly identify and fix the issue

• High-brightness LED backlight that provides clear visibility in bright sunlight or low-light conditions

Who Is This For

- Boat owners who need a durable, waterproof gauge to monitor engine performance in marine environments

• Off-road and 4x4 enthusiasts who want a reliable dashboard gauge that can handle dust, water, and rough conditions

• Automotive DIYers and mechanics who prefer a single-gauge solution for monitoring multiple engine parameters

• Owners of older vehicles or custom builds who want to add modern digital monitoring without replacing the entire dashboard

Usage Scenario

Mark was on a long fishing trip when his boat's warning light flickered. He had no way to tell if the engine was overheating or just a sensor glitch. After installing this 3-in-1 gauge, he saw the water temperature climbing past 90°C. The built-in alarm went off at 95°C, giving him time to throttle down and check the cooling system. Now he monitors oil pressure and voltage too, all from one gauge.

Micro Comparison

Unlike single-function gauges that require multiple units and separate wiring, this 3-in-1 design combines three critical readings into one compact 52mm display. The IP67 rating and 316 stainless steel housing give it an edge in durability over standard plastic gauges that may not hold up in wet or dusty conditions.

Specifications

- Material: 316 stainless steel + plastic

• Gauge Diameter: 52 mm

• Item Weight: 150 g

• Operating Voltage: 9~32 VDC

• Operating Current: ≤60 mA

• Operating Temperature: -20~70°C

• Storage Temperature: -30~80°C

• Waterproof Rating: IP67

• Interchange Part Number: Boat Water Temperature Gauge

Package Includes

- 1 x Gauge (sensor not included)

• 1 x Wiring Harness

• 1 x Instruction Manual

Why You Will Love It

You get three essential engine monitors in one compact gauge, freeing up dashboard space and simplifying your wiring. The built-in alarms give you peace of mind, alerting you to problems before they become costly repairs. Its rugged, waterproof design means you can trust it on the water or the trail.

Questions and Answers

Question: Does this gauge come with a sensor?

Answer: No, the sensor is sold separately. The package includes the gauge, wiring harness, and instruction manual.

Question: What voltage does this gauge work with?

Answer: It operates on 9 to 32 VDC, so it works with both 12V and 24V electrical systems.

Question: Can I use this gauge in a boat?

Answer: Yes, it has an IP67 waterproof rating and is made from corrosion-resistant 316 stainless steel, making it suitable for marine use.

Question: What does the alarm do?

Answer: The gauge has built-in alarm thresholds. It alerts you when oil temp exceeds 108°C, water temp exceeds 95°C, oil pressure drops below 0.8 bar, or voltage falls below 11.5V (12V system) or 22V (24V system).

Question: Is the backlight adjustable?

Answer: The gauge features a high-brightness LED backlight for clear visibility. The source data does not specify if brightness is adjustable.