Introduction of Simple for DC Electric Motor Model DIY Assemble Kit This is a simple permanent magnet for DC motor model to demonstrate the for DC electric motor working principle. It can be taken apart and reassembled, when powered with 3-6V voltage (some user may use 12V battery to test it, that is not advocated). It will rotate like a real electric motor for ideal for school scientific projects or physics teaching. Permanent Magnet: 22*20*20 mm (8.8*8*8 inch), Br 72 mT, N-pole is red, S-pole is white. Assembled Size: 14x8.7x11cm / 5.51"x3.42"x4.33" (L*for W*H) Electronics Educational Kits Science School Basic Electronic Demo Motor Teaching Project Permanent magnet for DC motor model to for DC electric motor, simple design easy to assemble and disassembled for ideal for school scientific teaching project. for DC motor experiment: input 3V - 6V for DC through wires and terminals, the coil will rotating, and speed up when voltage step up. To avoid short circuit, two electric brush never for touch the commutator segment. Permanent magnet: 22*20*20 mm (8.8*8*8 inch), Br 72 mT, N-pole is red, S-pole is white. English Instruction Instruction Parameter: Working Voltage: for DC 3.0V-6.0V; Material: plastic + metal; Application: Used to study magnetic lines of force; DIY Manual practice; School educational project; for Creative Gift. Magnet Size: 22x20x20 mm (0.86"x0.79"x0.79"); Magnetic Flux Density: 72mT; Operating Temperature: -20~70; Operating Humidity: 5%~90% RH; Installed Size: 14x8.7x11 for cm (5.51"x3.42"x4.33"). Function: Manual installation allows the user to understand the main structure of the electric motor. Verify the relationship between rotor rotation and current direction and magnetic lines. Master the principle of motor operation. Warm tips: for DC electric motor experiment: input 3V - 6V for DC through wires and terminals, the coil will rotating, and speed up when voltage step up. To avoid short circuit, two electric brushes never for touch the commutator segment. Its working voltage is for DC 3.0V-6.0V. And DC12V is not recommended.