The potentiometer is also known as a potmeter or Pot, it consists of a resistive element called the track and a sliding contact called the wiper internally where end terminals are attached to the resistive element.
Grove - Rotary Angle Sensor, this potentiometer twig produces analog output between 0 and Vcc (5V DC with Seeeduino) on its D1 connector. The D2 connector is not used. The angular range is 300 degrees with a linear change in value. The resistance value is 10k ohms, perfect for Arduino use. This may also be known as a rotary angle sensor.
Grove - Rotary Angle Sensor is compatible with both Arduino and Raspberry Pi. Please use a Base Shield V2 to connect it with your Arduino boards and use a Base HAT for Raspberry Pi to connect with your Raspberry Pi. 
Highlighted Features
- High availability suitable for project needs: ± 20% resistance tolerance, and 300 degrees Angular range with a linear change in value
- Perfectly compatible with both Arduino and Raspberry Pi: 0-5V analog output and 10k ohms resistance.
- Plug and use: Grove connector design.
Applications
- Grove-based analog Input
- Arduino project
- Raspberry PI project
- Maker education