Description
Bright, durable, and theft-resistant — the Optronics ONE™ STL003RFLBK is a 4″ round red LED stop/turn/tail light featuring a secure locking PL-3 connection and flange mount design. Part of Optronics’ premium ONE™ series, this light delivers excellent visibility with low power draw and a fully sealed, waterproof construction built for tough trailer environments.
The locking connection helps restrain the plug and reduces the risk of disconnection or theft, while the flange mount provides a clean, secure installation.
Key Features:
- Function: Red Stop / Turn / Tail Light
- Size: 4″ round with flange mount
- Connection: Locking PL-3 (prevents accidental disconnect)
- LEDs: High-intensity diodes for bright, reliable performance
- Sealed: Sonically sealed, fully waterproof and dustproof
- Voltage: 12V DC
- Amp Draw: 0.33A (Stop/Turn), 0.019A (Tail)
- Housing/Lens: Rugged polycarbonate
- Certifications: DOT approved
Ideal For:
- Rear tail lights on boat, utility, cargo, and equipment trailers
- Replacement or upgrade from incandescent or older LED lights
- Applications where a secure, locking connection is preferred
- Flange (surface) mount installations
With a lifetime LED warranty and Optronics’ reputation for quality, the STL003RFLBK offers outstanding value and long-term reliability.
Ready to upgrade your trailer lighting?Add the Optronics ONE™ 4″ Round LED Stop/Turn/Tail Light (STL003RFLBK) to your cart today!
Part Number: STL003RFLBK, Sold Individually. ONE™ LED 4″ Round Sealed Light with Locking Connection. Locking connection restrains straight PL-3 plug preventing loose connections and corrosion. Recess flange mount for security, theft reduction. Sonically sealed, waterproof. Mount in any 360-degree position. Includes plug (A45PB) for complete installation.
Product Specifications
- Color: Red
- Diodes: 1
- Mount: Flange – Recess
- Connection: PL-3
- FMVSS: S T I
- Housing Material: Polycarbonate
- Lens Material: Polycarbonate
- Voltage: 12V
- Amp Draw: 0.33A Stop/Turn, 0.019A Tail
- Warranty: Lifetime LED Warranty
- Weight: 0.275 lbs.
- Size/Shape: 4″ Round
- Dimensions (W x H x D): 5.480 x 5.480 x 2.019









