Anti-gravity demonstration model, Revolution, works on the principle of repelling magnets, ideal for discussing magnet levitation and frictional force experiments, Approximate product size: 2-1/2x 5 x3inch
Circuit Board 2, Mass: 0.44 kg, Optional power sources: up to 4 AA batteries, not included, DC power supply such as Extech Digital DC power supply, Power Amplifier, Maximum voltage: 10 V, Resettable fuse opens at 0.8 A, but 0.3 A or less is recommended