100TECH Boat Fuel Gauge 2-1/16" All-Black — IP67, Adjustable 5-Signal Sender, Anti-Vibration

The 100TECH Boat Fuel Gauge is a precision aftermarket marine fuel-level meter with adjustable resistive input, multi-color backlight, and IP67 durability for reliable onboard readings.

This compact 2-1/16" (Φ52mm) instrument replaces or upgrades standard boat fuel gauges, offering an accurate 8-step needle display and support for five common sender signal ranges. Designed for 12–24V systems, it combines vibration-resistant mechanics with easy push-button setup and selectable backlight colors so the gauge fits a wide range of vessels and dashboards.

How does this gauge deliver stable readings in rough conditions?

The gauge uses a precision needle mechanism with anti-vibration design to reduce fluctuation from engine or wave movement. An 8-step fine scale makes each level easier to distinguish at a glance, improving situational awareness while underway.

• Anti-vibration needle stabilizer for steady indication
• 8-level graduated scale for clearer fuel differentiation
• 316 stainless-steel bezel resists corrosion and fogging

Which fuel sender signals are compatible and how do I set them?

100TECH's gauge supports multiple resistive sender ranges and lets you toggle between them with a long button press. The needle initially moves to Empty during setup, then you select the proper resistance curve so the gauge matches your existing sender.

• Compatible ranges: 240–33Ω (default), 0–190Ω, 240–30Ω, 0–180Ω, 10–180Ω
• Enter setup: long-press mode button 3 seconds; follow backlight flash prompts
• Note: not compatible with non-resistive or unsupported resistance outputs

What installation and electrical requirements should I expect?

The instrument fits a standard Φ52mm (2-1/16") panel cutout and runs on 9–32V DC, making it suitable for most 12V or 24V marine electrical systems. Basic wiring and the included instructions allow straightforward mounting and calibration for hobbyists and professionals alike.

• Panel cutout: Φ52mm (2-1/16") for standard gauge pods
• Operating voltage: 9–32V DC (works with 12V/24V systems)
• Clear installation steps included for quick setup and calibration

Can I change the backlight color to match my dash?

Yes — a brief press cycles through eight illumination choices so you can blend the gauge with factory lighting or create a custom look. An automatic cycling option is available if you prefer a rotating display effect.

• Colors: Red (default), Green, Blue, White, Yellow, Yellow-Green, Orange, Purple
• Short press to step through colors; automatic cycle option included
• Improves night readability and dash aesthetics

Who is this for? Boaters, marine technicians and vehicle owners seeking a robust, retrofit fuel gauge will appreciate this 100TECH unit: it’s ideal for small craft, workboats, and recreational vehicles where accurate, vibration-resistant level readouts and straightforward compatibility with common resistive senders are needed. It’s not suitable if your sender outputs unsupported resistance ranges — check your sender specification before purchase. Backed by a 2-year limited warranty and lifetime technical support, it’s built for long-term use in wet, salty environments.