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IIVVERR Pair Aluminum Housing 20V 40KHz Ultrasonic Transducer Sensor 16mm (Par de aluminio con sensor de transductor ultrasónico de 20V 40KHz de 16 mm - - Amazon.com
Amazon.com: Ultrasonic Cleaner, Jewelry Cleaner with 40kHz Five Digital Timer 600ML Ultrasonic Jewelry Cleaner with Basket for Cleaning Eye Glasses, Rings,Watch,Coin,Silver… : Industrial & Scientific
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IIVVERR 10mm Diameter Aluminum Housing 20V 40KHz Ultrasonic Transducer (Transductor ultrasónico de 10 mm con carcasa de aluminio de 20 mm y 40 VHz - - Amazon.com
3.5M 40KHz DC 5V Waterproof Ultrasonic Sensor Module Supersonic Range Distance Level Measurement Millimetre Detect for Arduino: Amazon.com: Industrial & Scientific
Amazon.com: VEVOR Ultrasonic Cleaner 2L Digital Ultrasonic Parts Cleaner with Timer 40kHz Professional 304 Stainless Steel Ultrasonic Cleaner 110V for Jewelry Watch Glasses Diamond Eyeglass Small Parts Cleaning : Industrial & Scientific
IIVVERR 10mm Diameter Aluminum Housing 20V 40KHz Ultrasonic Transducer (Transductor ultrasónico de 10 mm con carcasa de aluminio de 20 mm y 40 VHz - - Amazon.com