Cheap And Discounts Trumsense STT112F30TRS2000 RS485 Output M30 2m Ultrasound Sensor 112Khz 15 to 30V Power for Automatic Production Control Wholesale. Buy Directly From Merchant Svit SensoPlan by Trumsense Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.