PMS9103M PM2.5 laser dust sensor module detects indoor gas

Refund Instructions for Returns:
1. Return and exchange services will be provided within 7 days upon receipt.Returns are not accepted unless there is something wrong with the product.
2. You can exchange and refund.The return freight shall be borne by the buyer.
If you have any questions about the products, please feel free to contact us by E-mail.Our goal is to satisfy our customers!
Note: Adhering to the attitude of being responsible to customers, our company tests each product before delivery to ensure product quality.
Wish you a happy shopping, welcome to visit next time!