We are treadmill developers and we want to include bluetooth capability to our products. We found, on the bluetooth website the RSC characteristic ( Running Speed and Cadence) that will allow us to send speed and cumulative distance, according to the standard. We can not find how to send out the inclination of the treadmill. Do you know if there is a standard for this or if we can follow some manufacturer protocol? We suppose to use Nordic bluetooth board for arduino to start the development. Thank you for your support. Regards Emanuele