Cheap And Discounts Trumsense STTWS930485 Wind Speed Sensor 9 to 30V Power RS485 Output With High Sensitivity and Perfect Water Proof Design Wholesale. Buy Directly From Merchant Svit SensoPlan by Trumsense Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.