These wireless RGB car door warning lights activate automatically when your door opens, alerting traffic behind you with a rapid flash sequence. No wiring, no drilling — just peel, stick, and go. Dual sensors detect both ambient light and door position for fully automatic operation.
Key Features
Auto on/off — activates when door opens, deactivates when door closes
Dual sensor: ambient light sensor + door position sensor
6-second rapid flash on door open — maximum rear warning
110-second passive reflection mode after flash — continues to warn traffic
Only activates in low-light conditions — no false triggers in daylight
Wireless — no wiring or modification to car electrics
Adhesive mount — easy DIY installation on any door position
Waterproof design
Button battery powered (DC 3V) — easy to replace
Set of 2 lights
How It Works
Press once to turn on; press and hold until red flash ×2 to turn off
Light activates only in low-light — ambient sensor prevents daytime false triggers
Door sensor detects open/close position automatically
Note: Remove the protective film from the sensor surface before first use
