4-Piece Universal Wireless Car Door LED Warning Light, Safety Light, Strobe Lights for Rear Anti-Collision (Blue)

Universal Design: Fits any car, SUV, or truck. Wireless design, no damage to the car's original wiring; simply stick it on the car door.

How it works: When the door is opened, the blue light flashes to warn pedestrians or vehicles behind to avoid an accident or collision.

3 Flashing Modes: 0-7 sec. All LEDs flash rapidly. 7-60 s. Each LED flashes sequentially. 60-110 s. Each LED flashes slowly in a circular pattern. 110 s. Automatic power-off.

Waterproof Design: Immersed in water for 30 minutes and still works.

High-tech component detection: Controlled by an infrared chip program to improve sensitivity and maintain product stability. Long battery life: This product uses a CR2032 button cell battery (battery included). Through testing, under normal operating conditions, it can be used for 1 to 1.5 years. The screw-cap design allows for easy battery replacement.