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Review on ๐Ÿšด Electric Bicycle Pedal Assist Sensor - Bike Power E-Bike PAS System - Assistant Sensor Speed Sensor with 5/8/12 Magnets by Ricardo Tlaxcalteca

Revainrating 3 out of 5

Works with Lyen 3977ST-MII Must be soldered from the original connector

There is no wiring diagram. There is no LED blinker on the device. No directions. plastic on the side of the sensor. Works with gaps up to 1/8 inch. If your bike spins backwards, simply replace the plastic on the sensor block on the bottom bracket bracket. You don't have to mount on the right side (sprocket side). Much easier to install on the left side. I had to cut off part of the connecting rod to make room (removed by 1/8" to get enough clearance. The wiring that worked for me was the following: Lyen wiring - black (-) green (+ )) Red (Signal) Device Wiring Yellow (-) Blue (+) Red (Signal) The device simply provides a 5V pulse voltage on the signal wire after being powered by the negative and positive wires, you can operate check by connecting a voltmeter to the red wire and see it toggle on and off as you spin it across the magnets.

Pros
  • New
Cons
  • There are nuances