Follow the manufacturer's directions to install your speed and cadence sensors. Here you can see a single unit with a magnet attached to a rear wheel spoke for wheel revolution sensing, and a crank mounted magnet for cadence sensing.
The unit detects each magnet with a different Hall effect sensor and then sends revolution data over BLE.
Use the CLUE Display
Plug in power to the CLUE, either with a battery pack or over USB.
The CLUE will begin to search for the cycling speed & cadence sensor.
Turn the crank to wake up the sensor in case it has gone into power saving mode.
When the CLUE finds the CSC sensor, they will negotiate a connection.
Now, you can give the wheel a spin and crank the pedal. You'll see the cumulative revolutions of each displayed on the CLUE!