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Edge 520 giving high HR reading with older Garmin HRM2-SS

Former Member
Former Member
Hi all,

I have just bought a new Edge 520 after using an Edge 500 for many years. I have successfully paired the HR strap (Garmin HRM2-SS) with Edge 520 but its giving very high heart rate reading (eg > 200 bpm!). When I start up my Edge 500 and test the HRM2-SS with it I have a normal HR reading.

Is the Garmin HRM2-SS compatible with the Edge 520?