4pcs Boost Transformer Please allow 4-6 days processing before ship out. For gearmotors or similar motors, we don’t ship using epacket and will use regular shipping if needed. Please note that regular shipping like singapore post might take 45-60 days to deliver, epacket 20 -35 days to deliver Thank you for understanding. » All Products » 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 Clamping device for Motors with Plastic Reducer 2pcs Red LED Module for LilyPad 10pcs SOP28/SSOP28/TSSOP28 SMD to DIP Adapter 3pcs 3×AAA Battery Holder Box with Wires A2212 Brushless Motor with Banana Plugs (930KV)