Blue Sea Systems Mini OLED DC Voltmeter, 12V/24V, 8-36V DC, 1-1/8 in Cutout

Overview

The Blue Sea Systems Mini OLED DC Voltmeter is a compact panel-mount meter for monitoring DC battery and system voltage on 12V and 24V boats. It reads from 8-36V DC with 0.01V resolution and ±1.0% accuracy, giving a clear voltage check at the helm, nav station, electrical panel, or battery switch area.

The OLED screen is daylight readable and built for exposed marine panels, with IP66 water protection for spray and washdowns. Reverse polarity protection adds a useful margin during installation, and the meter fits a common 1-1/8 inch panel cutout, which makes it practical for new builds, refits, and accessory panels where space is limited.

Key features

• Monitors DC voltage on 12V and 24V systems with an 8-36V DC input range.
• 0.01V display resolution and ±1.0% accuracy help confirm battery state and charging performance at a glance.
• OLED screen stays readable in daylight, making it useful at open helms and cockpit panels.
• IP66 water protection supports installation in marine locations exposed to spray or routine washdowns.
• Reverse polarity protection helps protect the meter during wiring.
• Fits a standard 1-1/8 inch cutout, so it can be added to many panels without needing a large mounting footprint.
• Low 15mA operating current suits continuous voltage monitoring without adding much load to the DC system.
• Operating temperature range of -40°C to 70°C supports use in engine-adjacent panels, cabins, and exposed helm areas.

Variants

This Mini OLED DC Voltmeter is offered in two screen color configurations. Both versions share the same core voltmeter function, 8-36V DC input range, 1-1/8 inch cutout, 15mA operating current, and ±1.0% accuracy.

The main difference is the OLED screen color, which affects the appearance of the display on the panel. The listed OLED life also varies by screen color.

• 1733, screen color yellow. The yellow display gives a warm, high-contrast readout and has a listed OLED life of 100,000 hours.
• 1733200, screen color blue. The blue display gives a cooler readout style that can match many modern helm and electronics layouts, with a listed OLED life of 10,000 hours.

Installation and setup

The meter mounts through a 1-1/8 inch panel hole, so it is well suited to compact dash panels, switch panels, and retrofit locations where a larger meter would be difficult to fit. The small footprint makes it useful for adding a dedicated voltage display near a battery bank, DC distribution panel, or helm electronics feed.

Because it reads voltage directly from the DC circuit, installation should follow proper marine wiring practice, including correct polarity, suitable overcurrent protection, and secure terminations that can handle vibration and moisture. The low operating current makes it practical for installations where the display may remain energized for regular system checks.

Compatibility and fit

This voltmeter is a good match for boats using 12V or 24V DC electrical systems where the operator wants a dedicated voltage readout without adding a large multifunction display or networked monitor. It is useful on powerboats, sailboats, fishing boats, and tenders where battery voltage, alternator output, or charger behavior needs to be checked quickly.

The 8-36V DC input range gives enough coverage for common marine battery systems while keeping the product focused on DC voltage monitoring. It is not a battery monitor with amp-hour tracking, shunt-based current measurement, or network data output, so it should be used where a clear local voltage reading is the requirement.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

Learn more.

Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

Learn more.

Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

Learn more.