SAMDO Fuel Level Gauge 52mm 12V/24V — Universal Digital Marine Gauge with 7-Color Backlight and Waterproof Housing

SAMDO Universal Fuel Gauge is a waterproof 52mm digital fuel-level meter with adjustable signal ranges and seven-color backlight, compatible with 12V/24V systems.

This compact marine-grade gauge reads fuel level using a stepper-driven needle and works with multiple sender resistances so you can replace or upgrade an existing panel without rewiring. Designed for boats, trucks, RVs and industrial tanks, it accepts a wide voltage span and offers selectable signal curves to match common float senders. The all-weather sealed housing and vibration-resistant moving-magnet mechanism make it reliable at sea or on rough roads.

How do I match this gauge to my fuel sender?

Choose one of the preset resistance profiles to align the gauge with your sender’s ohm range. The unit supports five selectable curves to handle popular sender types, eliminating the need for external resistors or custom calibration in many installs.

• Selectable signal ranges: 0–190Ω, 240–33Ω, 240–30Ω, 0–180Ω, 10–180Ω
• Simple wiring to 12V or 24V power and sender lead
• On-screen or setup-pin selection for quick matching
• Works with standard float-style senders used in marine and vehicle tanks

What makes it suitable for marine and off-road use?

The gauge is built with a fully sealed enclosure and components chosen for resistance to moisture and vibration. Its moving-magnet drive and stepper motor deliver stable pointer movement even under engine vibration or wave action.

• 100% waterproof housing to protect electronics and dial
• Anti-vibration design for steady needle reading
• Wide operating voltage: nominal 9–32V, short-term up to 36V
• Durable materials and long-life stepper motor

How does the backlight and display customization help visibility?

The gauge offers a seven-color backlight so you can match panel aesthetics or improve night readability. Adjustable brightness and color options let you optimize contrast for different cabin lighting conditions.

• Seven-color backlight for day/night visibility and style
• Brightness settable to reduce glare during night runs
• Clear white dial with full-range needle movement for instant reading
• 52mm compact size fits standard instrument cutouts

What are the electrical and mechanical installation considerations?

The gauge installs into a 52mm panel opening and accepts 12V or 24V systems without adapters. Wiring is straightforward—power, ground and sender connection—and the unit’s compact depth fits most dash cavities.

• Panel cutout: 52mm standard mount size
• Long-term operating voltage: 9–32V; brief max 36V (≤1 min)
• Low power draw thanks to stepper motor technology
• Includes mounting hardware and clear wiring diagram for common setups

Who is this for? The SAMDO Universal Fuel Gauge is aimed at boat owners, RVers, commercial vehicle operators and fleet managers who need a dependable, easy-to-fit fuel-level instrument compatible with many float senders. It’s also a good choice for DIY installers and marine technicians who want a weatherproof, low-power gauge with flexible signal matching and visible multi-color lighting for modern dashboards.