Traffic Light Laser Monitor

Theo dõi màu đèn giao thông và tìm ra khi nào nó chuyển sang màu xanh lá cây.

This Traffic Light Laser Monitor can be used to monitor the traffic light color and find out when it turns green.

You can use this app on most traffic lights because traffic lights with 3 lights, 2 lights or 1 light are supported.

Usage

1) Position the circles on the traffic light and press the button.

2) Wait for the traffic light color to change. Position the circles farther on the traffic light.

3) Thats it! When the traffic light turns green, the app tells you this.