Refund policy

We want every customer to choose the right sensor module with confidence. Because most YYS Sensor products are used for B2B evaluation, OEM integration, or engineering projects, returns must be reviewed and approved before being shipped back.

If your item arrives damaged, incorrect, defective, or materially different from the confirmed order, please contact us within 14 calendar days after delivery.

Please include your order number, product model, quantity, photos or videos, test conditions, wiring method, power supply, output interface, and a short description of the issue.

Customized products, modified firmware, special connectors, private-label items, calibrated modules, opened or soldered components, and products damaged by incorrect wiring, misuse, overvoltage, condensation, or unsuitable application conditions are generally not returnable unless confirmed defective by YYS Sensor.

Approved refunds or replacements will be processed after inspection. Shipping fees, customs duties, taxes, bank fees, and import/export costs are generally non-refundable unless the issue was caused by our confirmed error.