Specification:

1.3-PIN Male Plug with IP65 Level Waterproof and sealed waterproof connectors.
2.Equipped with brake sensors to cut off the power when you are braking.
3. The magnet is close to the sensor, the brake is inactive (motor runs). When the magnet goes away from the sensor, the ebrake activates (motor power certainly is cut off).
4.It is easy to install that the brake sensors and magnets can be sticked on your brake levers. And make this distance between brake sensor and magnets is 1-5mm.