Solar Panels
Solar Controllers
Batteries
Inverters
Mains Chargers
DC-DC Chargers
Cables/Accessories
Power Converters
Monitoring
Kits
By Application
By Brand
Blue Sea 18-32V DC Voltmeter with Internal Shunt and Backlit Meter Face
Blue Sea 18-32V DC Voltmeter with Internal Shunt and Backlit Meter Face
Analogue 24V System Gauge - 4-Wire Connection - 12V/24V Backlight
Regular price
$86.49
Availability:
Special Order
View all products from Blue Sea
Guaranteed Safe and Secure Checkout
0
DESCRIPTION
Precision 24V Battery System Monitoring for Marine and Off-Grid Setups
Expanded Analogue Scale for Accurate Voltage Tracking
Monitoring the state of charge and charging health of a 24V battery bank requires more than a broad-spectrum gauge. Standard 0V to 32V gauges compress the critical operating window of a 24V system into a tiny fraction of the dial, making it difficult to spot subtle voltage drops or overcharging conditions. The Blue Sea Systems 18-32V DC Voltmeter addresses this issue by utilising an expanded analogue scale focused entirely on the 18V to 32V range. This dedicated resolution allows system operators, marine skippers, and off-grid enthusiasts to read fractional voltage changes at a glance, directly reducing the risk of premature battery degradation from chronic undercharging or deep discharging.
Designed with a classic square bezel and a high-contrast white dial, this analogue gauge provides immediate, responsive feedback via a precision needle. Unlike digital displays that can suffer from screen glare in bright sunlight or lag during rapid voltage fluctuations, this mechanical movement delivers real-time tracking of your electrical system's performance. A front-accessible mechanical zero adjustment screw is integrated into the housing, allowing for straightforward calibration if required over the lifespan of the installation.
Streamlined 4-Wire Installation and Flexible Backlighting
Installing panel instrumentation can often become complicated when external shunts and complex wiring looms are involved. This DC voltmeter simplifies the fit-out process by incorporating an internal shunt, requiring only a straightforward 4-wire connection to get up and running. Two wires handle the direct voltage sensing from the 24V source, while the remaining two wires manage the meter's illumination.
A major advantage of this unit is its independent backlight circuit. The meter face features dedicated terminal connections that accept either 12V DC or 24V DC power for illumination, entirely separate from the 18V to 32V sensing circuit. This is particularly beneficial in marine vessels, heavy transport trucks, and custom 4WD or caravan builds where the primary propulsion or house battery bank operates at 24V, but the dash illumination and helm lighting circuits are stepped down to 12V. The backlit face ensures clear visibility during night navigation or in dimly lit engine rooms and power canopies without tying you to a single lighting voltage.
Key Features and System Benefits
- Expanded 18V to 32V Scale: Tailored specifically for 24V nominal battery banks, providing high visibility across resting, discharging, and charging voltage thresholds.
- Dual-Voltage Backlight Circuit: Separate connections allow the backlight to be powered by either a 12V DC or 24V DC dash lighting circuit independently of the monitored battery bank.
- Built-In Internal Shunt: Eliminates the need to source, mount, and wire external shunts, saving valuable space behind the dash or switchboard.
- High-Contrast Analogue Display: White meter face with crisp black markings and a responsive needle ensures effortless readability in both low-light and bright environments.
- Simple 4-Wire Hook-up: Reduces installation time and minimises potential wiring faults behind the control panel.
Ideal Applications
Built to the high standards expected of Blue Sea Systems, this voltmeter is engineered to withstand the rigours of mobile and stationary power environments. It is an excellent fit for:
- 24V marine electrical panels on yachts, cruisers, and commercial vessels
- Heavy-duty trucks, buses, and plant machinery operating on 24V architecture
- Off-grid solar and hybrid battery enclosures requiring reliable local visual monitoring
- Custom 24V caravan, motorhome, and expedition vehicle electrical systems
Upgrade Your Control Panel
Ensure you have clear, accurate oversight of your 24V power system day and night. Add the Blue Sea 18-32V DC Voltmeter to your electrical setup for dependable, easy-to-read voltage monitoring.
SKU: BS-8240B
SPECIFICATIONS
| Specification | Detail |
|---|---|
| Product type | DC voltmeter |
| Supported DC voltage range | 18-32V |
| Connection | 4-wire |
| Shunt | Internal |
| Display | Backlit meter face |
| Backlight connections | Separate 12V or 24V DC connections |
| SKU: | BS-8240B |
| Model #: | BS-8240B |
| MPN: | BS-8240B |
| Package weight: | 0.144 kg |
| Package length: | 0.11 m |
| Package width: | 0.11 m |
| Package height: | 0.09 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
DOCUMENTS
Loading product documents…