Compatibility: The gear shift sensor is only compatible with BAFANG BBS02B BBSHD BBS01B mid drive motor kit.
Function: Cut off Power during gear sensor to avoid grinding and cassette breaking. Extend the life of your chain and cassette significantly with the gear shift sensor.
Connector: IP65 Waterproof Plug , 3 Pin Male Connector.
Strong Materials:Made of high quality premium materials for good performance and long service life.