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Name: T300 smart tank chassis Material: Aluminum Oxidation: Yes Color: gold or silver Track: Plastic Size: about 290 * 270 * 100mm (L * W * H) Name:25mm gear motor Output speed: 150±10%rpm No_load current: 200mA (Max) Stall current: 4500mA(max) Stall torque: 9.5kgNaN Rated speed: 100±10%rpm Rated torque: 3000gNaN Rated current: 1200mA (Max) Noise :56dB Working voltage: 9V Outside Shaft Length: 14.5mm Shaft End Play: 0.05-0.50mm Screw Size: M3.0 Dia. Of Shaft phi 4mm, D3.5 Encoder: 2pulses/circle Working voltage for sensor: 3-5V. Tank chassis: 1 PC; Wireless router: 1 PC; ESP8266 development board kit: 1 set; HD camera: 1 PC; For the shipping convenience, the tank/car chassis is unassembled. Track can be connected by any length with a needle. The motor paramter can be seen at