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Add a wireless speed/cadence transmitter to your ROX and STS wireless computers (BC1909 HR and BC 2209 MHR).
Reviewed by 1 customer
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Comments about Sigma Sport Sigma Rox/Sts Triple Sensor Transmitter:
I bought Sigma 2209MHR computer for my primary bike and get this kit for the second one.
It took about 5 min to install all parts.
Very good wireless range and quality.
Very durable and good waterproofness.
Computer change the mode from bike1 to bike2 with no problem and not confused.
Pedal magnet for cadence sensor has two parts and very comfortable to install on any crank.