Grand General – Medium Rectangular LED Strobe Light 4″ L – 81809

Medium Rectangular LED Strobe Light – 4″ L

The Grand General Medium Rectangular LED Strobe Light 4″ L (SKU 81809) features four high-power LEDs and is designed to provide visible warning or strobe lighting effect in a compact form. With a broad voltage compatibility and surface mount design, it’s suitable for trucks, trailers, emergency, utility and other 12 / 24 / 36 V systems.

• Manufacturer: Grand General
• Item Number / SKU: 81809
• LED Count: 4 high-power LEDs
• Voltage Range: 9 V to 36 V
• Size: 4″ L × 1-1⁄4″ W × 5⁄8″ D
• Lens/Color: White & Amber/Clear
• Features: 14 split-flash patterns, fully self-contained, surface mount
• Housing/Material: Sealed lens with aluminum housing
• Installation: 3 wires hard-wired; 3-3⁄4″ hole to hole bolt pattern
• Application Note: For emergency-vehicle or warning use. Check local DOT regulations before use.

Performance & Fit

This strobe light is designed for compact spaces where a strong visual warning is required. The sealed lens and aluminum housing provide durability and weather resistance. The wide voltage range ensures compatibility with various vehicle systems. With fourteen different flash patterns, you can select a style appropriate to the use case—from steady to pulse to split-flash modes.

Installation

1. Secure power off before installation.
2. Mark the mounting location and drill for the 3-3⁄4″ hole-to-hole bolt pattern.
3. Connect the three wires according to the wiring diagram (typically ground, positive power, and flash control wire if applicable).
4. Tighten mounting bolts and verify the strobe functions properly across all flash modes before full use.

Why You’ll Love It

• Compact 4″ length — fits tight spaces
• Wide voltage compatibility (9-36V) — flexible installation across trucks, trailers, emergency vehicles
• Four high-power LEDs for strong light output
• Fourteen flash patterns allow customization of warning effect
• Durable aluminum housing and sealed lens for rugged use

Common Questions

• Can I use this on a standard 12 V truck system? Yes — the 9-36 V rating ensures compatibility with 12 V and 24 V systems.
• What flash patterns are included? Fourteen split-flash modes allow you to vary the effect from simple single-flash to complex split-flash patterns.
• Is the mounting bolt-pattern standard? Yes — the unit uses a 3-3⁄4″ hole-to-hole bolt pattern for surface mount installation.
• Is this DOT approved? This model is for emergency vehicle or warning use only. Check your local DOT/county/city regulations for application compliance.

⚠️ California Proposition 65 Warning:This product can expose you to chemicals including lead and lead compounds, known to the State of California to cause cancer and reproductive harm.For more information, visit www.P65Warnings.ca.gov.

Note: Strobe light only—wiring and secure mounting required. Choose flush surface mount location and confirm local regulatory compliance before use.