7 Color Backlight 52mm Voltmeter with Alarm | 8-16V / 18-32V for 12V 24V Car Marine

Key Features

• 7-Color Backlight — The backlight offers seven colors so you can match your dashboard style.
• Built-In Alarm — The built-in alarm warns you when voltage drops below the set level, helping you prevent battery failure.
• Stepper Motor Drive — A stepper motor drives the display for precise readings with low power consumption.
• Ultra-Wide Voltage Range — The 9-32V working range supports both 12V and 24V systems in cars, trucks and boats.
• Moving-Magnet Mechanism — The moving-magnet needle offers good endurance and anti-vibration for stable readings in rough conditions.

Product Specifications

• Dimensions: 52mm (2.05 in)
• Fixing Dimension: 52 mm / 2.0 in
• Weight: 150 g / 5.3 oz
• Material: Plastic Shell
• Indicating Range: 8-16V (Alarm Set: less than 11.5V) / 18-32V (Alarm Set: less than 22V)
• Working Voltage: 9-32V (Maximum up to 36V for less than 1 min)
• Backlight: 7 Color Light
• Operation Mode: LCD Display, Stepper Motor
• Package Contents: 1x Voltmeter, 1x Multi-plug Socket, 1x Installation Instruction
• Measurement tolerance: Please allow 1-3 cm / 0.4-1.2 in difference due to manual measurement.

What It Is / How It Works

This 52mm voltmeter shows real-time voltage readings for 12V and 24V systems, with a color-coded display and a built-in alarm.

Dashboard voltmeters are commonly mounted in a gauge pod so the reading stays visible while driving or sailing.

Who It's For / Use Cases

Dashboard voltmeters suit car and truck owners who want to watch battery voltage over time, marine owners checking a boat's electrical system, DIY builders adding gauges to custom panels, and mechanics fitting custom gauge setups.

How to Use / Care

1. Use it on a 12V car battery, which the 8-16V indicating range covers.
2. Mount it on a dashboard in a 52mm gauge pod, which matches the 52 mm fixing dimension.
3. Use it on marine vessels, since the gauge is designed for marine use.
4. Cycle the backlight colors with the included multi-plug socket or a separate control wire.

How to Choose

Start with the electrical system you are monitoring. The 9-32V working range covers both 12V and 24V systems, so confirm which one your vehicle or boat uses.

Measure your gauge pod opening and compare it with the 52 mm fixing dimension before you choose.

A built-in alarm is useful if you want a warning when voltage falls below a set level, so check the alarm thresholds against your system's voltage.

Frequently Asked Questions

Can I use this voltmeter on a 12V car battery?
Yes, the 8-16V indicating range covers standard 12V car batteries, and the working voltage is 9-32V with a maximum of 36V for less than 1 minute.

Does the alarm make a sound when voltage is low?
The built-in alarm activates when voltage drops below the set threshold: under 11.5V on the 8-16V range and under 22V on the 18-32V range.

Is this gauge waterproof?
It is designed for marine use and has a waterproof rating.

How do I change the backlight color?
The 7-color backlight can be cycled through using the included multi-plug socket or a separate control wire.

Will this fit a standard 52mm gauge pod?
Yes, the fixing dimension is 52 mm (2.0 in), which fits most standard gauge pods.