Can I connect external sensors, too? External RPM sensors or heart rate monitors can be connected using Bluetooth Smart (BLE) and as additional sensor. Have more questions? Submit a request 2 Comments Date Votes 0 Roberto Capra February 12, 2017 15:52 Can I connect a Garmin Fenix 3 smart watch as HR monitor ? 0 Roberto Capra February 12, 2017 15:53 I can't connect my Polar T34 HR belt Is there a specific procedure to follow ? Pls advise Please sign in to leave a comment.