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【Motor Set for Stem Learning 】This power function set includes 1 motor, ultrasonic sensor, four-wheel drive master, 4 wheels,4 Cross shaft and remote control to add new functions and features to your models
【1 L Motors for High-speed】 The motor provides strong power. High-speed and medium-torque building block motor power supply kit. Support forward and backward.
【Ultrasonic sensor】about 2.5m away(1cm error);The master control is connected with the motor and ultrasonic sensor
【2-Terminal Master】 The 4-Drive master feature with 7.4V output and 500mah li-ion battery. Connected by 4 wheels for movement.
【Remote Control 】There is a Bluetooth remote control. Support the technic parts foward /backward. Reserve swithching betwwen positive and negative. Remote control needs 2*AAA power supply (not included)

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