pair of universal handheld sensors with supplied extension cable, male jack type insertion on the computer i.e. placing both palms on the sensors detects the heartbeat very important for weight loss to check if you are working in the aerobic threshold (fat burning) the magnet with the wire must be installed on the flywheel brackets, while the sensor, i.e. the magnet on the flywheel about 1-2 millimeters away, to ensure that the speed is more real, you can try various positions on the flywheel closer to the center the more the speed increases and vice versa, it is not difficult it is a work of patience, as regards the installation of the computer on the handlebars, I usually go to the brico and buy a metal relay that can be adapted to the computer if you have any questions to ask myself ab.
