1. This is a small ultrasonic levitation device that can levitate foam balls.2. Operating at a frequency of 40kHz in air, this levitator can capture lightweight objects with a diameter of 2-3mm, such as foam balls and ants, and maintain stable suspension for extended periods. The mainboard generates slight heat.3. The circuit primarily consists of a single-chip microcontroller, a driver chip, and two ultrasonic transmitters.4. Operation is simple: Grab a small foam ball with tweezers and gently place it between the two ultrasonic probes to levitate it.5. This device is primarily used to learn about ultrasonic standing wave levitation and is suitable for students or DIY electronics enthusiasts.Power Input: DC5V (0.5-1A)Frequency: 40kHzOperating Temperature: -25℃ to 85℃Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on.Voltage:AC100-240VColor:BlackMaterial:plasticPackage Contents:1 * DIY Ultrasonic Levitation Kit1 * Power AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.