Title: Not waterproof
Product review: I'm on my second unit. Both suffer from water intrusion. I cut away the plastic housing so I could see what was making the sensor fail and sure enough the circuit board had lots of corrosion after I washed my bike. The second unit I try to seal using silicone in the battery compartment, wheel speed screw hole, and wire hole for the wheel speed reed switch. To no avail it somehow still got water inside the unit and is now failing.If you use your bike only on an indoor trainer then you can purchase this unit, if you go outside you are wasting your money.EDIT:I was able to seal up the unit better with the third unit using household silicone. So far so good. If you buy this product you will need to seal up the battery compartment, the sensor wire hole(remove screw from wheel speed sensor and pull apart), and the wheel speed sensor screw itself.I really like the dual sensor once it gets sealed up.
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