OONO Blinking Flasher Module DC 4.5–30V 10A — Normally-Open, Dual 25‑Turn Potentiometers

OONO's DC 4.5–30V 10A Blinking Flasher Module is a compact, normally-open electronic timer that creates adjustable ON/OFF flash cycles for DC lights and low-inductive loads.

This small module delivers a configurable blinking output for LED lamps, hazard lights, warning beacons and other DC lighting equipment. It runs from a wide DC input range (4.5–30V) and handles up to 10 amps, making it suitable for many 12V and 24V vehicle, marine and equipment applications. Two multi-turn potentiometers let you fine-tune both ON and OFF durations independently while an LED shows the output status.

How precisely can I control the blink timing?

You get separate, accurate control of ON and OFF intervals using the two 25-turn potentiometers. Each side adjusts from very short pulses to long pauses, so you can match the flash pattern to your device or legal requirement.

• Time range: 0.01 to 15 seconds for both ON and OFF.
• Two 25-turn trimmers allow fine incremental adjustments.
• Front LED indicates output state for easy tuning.

What loads and voltages will this module support?

The flasher is designed for DC resistive and mildly inductive loads such as LED arrays, incandescent bulbs and small beacons. It operates across a broad DC voltage span and supports up to 10 A continuous current with clear wattage limits at common voltages.

• Operating voltage: DC 4.5–30 V.
• Maximum current output: 10 A.
• Maximum load: 300 W at 30 V DC, 120 W at 12 V DC.
• Not a converter — no step-up/step-down or inverter functionality included.

How is the module mounted and connected?

The unit arrives in a compact plastic housing with pre-attached wires and two mounting holes for secure installation. The wiring is straightforward for technicians and hobbyists; use the screw terminals or wire splices appropriate for your application and secure with the two screw mounts if desired.

• Compact plastic case with two screw mounting holes.
• Pre-wired leads for quick integration into DC systems.
• LED status indicator on the module aids setup and troubleshooting.

Is this module compatible with LEDs and vehicle systems?

Yes — the flasher suits most LED lamps, vehicle hazard lights, warning signs and small DC bulbs so long as the total current stays within the 10 A limit. Because it is normally-open, the output behaves as an intermittent switched positive for typical automotive or accessory wiring layouts.

• Works with LED arrays and small DC bulbs; avoid large inductive coils unless within spec.
• Normally-open output for standard switching configurations.
• LED indicator makes it easy to verify operation in-situ.

Who is this for? The OONO DC 4.5–30V 10A Blinking Flasher Module fits DIYers, electricians, installers and product designers who need a dependable, adjustable flasher for DC lighting and signaling tasks. It’s ideal when you need flexible blink timing, a compact footprint, and support for up to 10 amps without adding power conversion. If you require AC operation, very high inductive loads, or built-in step-up/down conversion, consider a different module designed for those needs.