Speed Sensor for Bafang BBS01 BBS02 BBS-HD Motor Bafang Speedometer for Middle Drive Motor and Hub Motors, Electric Bicycle Speedometer, Speed Detection Accessory

Just as described, bought as a spare but i did test it and it works flawlessly.

Looks like exact replacement for my broken one. Think I had magnet too close for MTB riding. Think wheel flex caused it to hit and break off. Fortunately it was a downhill day when I wasn't using motor at all.

Decent product

The sensor seems a near exact replacement but what the heck is wrong with the team who approved security bits as the speedometer bolt!?I have a hex/allen key set but I don't have a security keyed hex wrench set. How am I supposed to use this? I had to go to the hardware store and buy a replacement bolt.

I like that it works, easy to install

Near as I can tell from the label, this is an exact replacement for the speed sensor that came with my BBS02B mid drive. What happened to mine? See the pictures. I wanted to see what made it "tick".When first powered on there is about 3.2 volts on the signal line. Passing a magnet over the hall sensor toggles that to zero volts. Every time the magnet is pass over the sensor, the voltage on the signal line is toggled.