Bontrager's DuoTrap Digital Speed/Cadence Sensor pulls double duty for your ANT+ cycling computer. It wirelessly transmits speed and cadence data and fits directly into the chainstay of certain Trek bicycles for a clean look that installs in seconds.
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The new dual ANT+ and Bluetooth Duotrap (not the S version) mounted easily in my Madone. It paired perfectly with the Cateye Strada Smart. And I assume it will pair with the Cateye Padrone Smart and Smart Plus as well.