4pcs Boost Transformer Hello Customers, we would like to inform everyone that we will not be accepting orders until we fix the issue of disappearing shipping cost from your orders. We are still investigating and fixing the settings so that the correct shipping cost will be displayed in every order. Thank you very much for understanding » Electronic Components » Others » 4pcs Boost Transformer This is an ultrasonic frequency boost transformer for ultrasonic sensors transducers. SKU: CQY10026064231 Price: 1.40 $ Product in stock SSL Certificate Quantity Updating cart... This is an ultrasonic frequency boost transformer for ultrasonic sensors transducers. Specifications Frequency: 40 KHz Inductance: 8 mH ± 5% Related Products 2pcs Servomotor Coupling Device 10pcs Drilled T Plastic Bar 100pcs S9013 NPN Transistor (TO-92) XL4015 5A Adjustable Step Down DC-DC Module (4 – 38 V input) 3 A LM2577 DC-DC Boost Module with Voltage Display