Notes:

1. Please inspect the product before installation to ensure there are no problems.

If you encounter any problems, please contact us to replace the product. Please do not dispose of the product packaging. If you do, you will be responsible for the return freight costs. (By placing an order, you agree to this term)

3. This product flashes automatically when it is in a dim light and vibrating environment, and it turns off automatically in bright light.Or it will automatically extinguish after two minutes of being in a stationary state.）。

Please place this product in a dark place and shake it to see if it flashes. If it does not flash, it may be because the chip is protected. Place the tail of the product under the sun or light for a while, and then perform the test.