The Hulk 4X4 DC Voltmeter gives you a clear look at what your 12V or 24V system is doing, with a measurement range from 5V right through to 30V. The blue LED readout is easy to spot on a dark track without flooding the cab, and the 29mm mounting hole size means it drops into standard switch panels or custom plates without drama.

This little gauge runs happily on a 12–24V DC feed and carries an IP66 rating, so dust and high-pressure spray from creek crossings or wash-downs are not a worry. The blue illumination is a set spec, so you can match it to other Hulk 4X4 gear in your dash. It is straightforward kit that tells you exactly what your battery voltage is, helping you tackle trips without guessing how your system is holding up.

• Hulk 4X4 branded DC voltmeter gauge
• Suitable for 12V and 24V DC systems
• Measurement range from 5V to 30V DC
• Blue LED illumination for night visibility
• 29mm circular mounting hole requirement
• IP66 ingress protection against dust and jets
• Compact round body suits dash and panels
• Simple two-terminal electrical connection layout
• Ideal for monitoring battery or accessory voltage
• Supplied as an electric accessory voltmeter

Q: Does this DC voltmeter work on both 12V and 24V systems?

Yes, it is specified for 12–24V DC systems. That means you can run it on standard 4WD starting batteries or 24V truck setups without extra modules. Just wire it to the circuit you want to monitor and stay within the 5–30V measurement range. It suits dual-battery installs where you want a simple voltage check on each bank.

Q: What level of environmental protection does the gauge have?

The voltmeter carries an IP66 rating. This rating means the housing is dust tight and can withstand high-pressure water jets from any direction. It is well suited to dashboards and switch panels in 4WDs that see mud, wash-down hoses and coastal air. It is still good practice to mount it away from direct submersion or constant pooling water.

Q: What size hole do I need to mount this gauge?

You need a 29mm round mounting hole. This matches many aftermarket switch and accessory panels, making it straightforward to add into existing setups. Measure your panel and drill or punch a 29mm opening for a snug fit. A correctly sized hole helps keep the IP66 seal effective and stops the gauge from rotating under vibration.

Q: Can I use this voltmeter just to monitor an auxiliary battery?

Yes, you can wire it to any single DC source within the 5–30V range. Many touring setups use it on an auxiliary battery that runs fridges, lights or inverters. By watching the blue display you can see when that battery drops near your preferred cut-off voltage. This helps you plan charging from solar, alternator or mains before the battery is pushed too low.