The direction and speed of the rotation depends upon its voltage & polarity to the power source. This module can be connected directly to single or multiple batteries (up to 6Volts) it can also be operated by a solar cell or electricity hand crank.
 
Features securely fixed components mounted onto a sealed ABS enclosure with non slip rubber feet. 
 
This module can also be used inconjunction with the BrightSparks 'Pulleys' activities. 
 
Also available as a front of class magnetic demonstrator.