{HEAD ~ A control system} adjusts the airflow parameter of the motor based on {TAIL ~ the motor speed} and environmental conditions such as light and motion 
{ HEAD ~ A control system } adjusts the airflow parameter of the motor based on { TAIL ~ the motor speed } and environmental conditions such as light and motion
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH