What are rotating switch switches (gripshift)?

Turn handle: is a gear lever on the handlebar, which is integrated into the handlebar handle, similar to the gas handle on the motorcycle. By turning to it, the tensile voltage changes and thereby the inserted gear on the circuit.

Turn handle switch (gripshift):
If a gear lever on the handlebar, which is integrated into the handlebar handle, is similar to the gas handle on the motorcycle. By turning to it, the tensile voltage changes and thereby the inserted gear on the circuit.

Relevant contributions:
Set the rear derailleur, Set bicycle circuit