
BAFANG Mid-Drive Speed Sensor
Reliable e-bike speed sensor designed for compatible BAFANG mid-drive motor systems. The sensor detects wheel rotation through the spoke-mounted magnet and sends a pulse signal to the motor system for real-time speed measurement.
Designed for stable signal output, accurate detection and straightforward installation.
KEY FEATURES
• Accurate Speed Detection
Provides a stable pulse signal for reliable real-time speed measurement.
• Stable Signal Output
Designed to provide consistent speed data to the compatible motor system.
• 2–5 mm Detection Range
For reliable operation, maintain an appropriate distance between the sensor and spoke magnet.
• IP65 Protection
Designed for normal outdoor e-bike riding environments.
• Compact & Lightweight
Sensor weight is approximately 19 g.
• Easy Installation
Mounts to the chain stay and works together with the spoke magnet.

SPECIFICATIONS
Product Type: E-Bike Speed Sensor
Signal Output: 1 Pulse / Cycle
Input Voltage: DC 4.2V–5.5V
Sensor Weight: Approx. 19 g
Mounting Position: Chain Stay
Cable Length: Approx. 80 mm
Induction Distance: 0–5 mm
Recommended Working Distance: 2–5 mm
Protection Rating: IP65
Color: Black

HOW IT WORKS
- The spoke magnet rotates with the bicycle wheel.
2. The magnet passes the speed sensor.
3. The sensor detects the magnetic signal.
4. A pulse signal is sent to the compatible motor system.
5. The system calculates and displays the riding speed.
INSTALLATION GUIDE1. Mount the sensor bracket securely to the bicycle chain stay.
2. Install the spoke magnet on the wheel spoke.
3. Position the magnet so that it passes the sensing area of the speed sensor.
4. Adjust the distance between the magnet and sensor.
Recommended distance: 2–5 mm.
5. Connect the sensor to the compatible motor system.
6. Rotate the wheel and confirm that the system detects the speed signal correctly.
CONNECTOR & SENSOR DETAILSThe sensor features a dedicated connector and integrated status indicator.
Please carefully compare the connector shape, pin configuration and your original speed sensor before ordering.
Different BAFANG motor generations may use different connectors and communication systems.
COMPATIBILITY
Designed for compatible BAFANG mid-drive motor systems using the same speed sensor connector and mounting configuration.
IMPORTANT:
Please compare your original speed sensor, connector shape, pin configuration and mounting style with the product images before ordering.
Compatibility should not be determined by motor brand alone.
PACKAGE CONTENTS
Package Includes:
• 1 × Speed Sensor
• 1 × Sensor Mounting Bracket
• 1 × Spoke Magnet
• 2 × Mounting ScrewsPlease refer to the product images for the actual package contents.