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Widely used in motor speed detection, pulse count, the position limit.   Features: Using imported groove optical coupling sensor, width 5mm. It have the output state light, if output is high level, the lights are off. If output low level, its on. If it covered, it will output high l..

 Motor and long shaft with hole. Johnson geared DC motor has exclusive high torque, best suitable with highly developing capable robots or robotic platform, various automation purposses. Gear box is built to handle the stall torque produced by the motor, the motor Shaft cmoes with a metal b..