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HRM Dual disconnecting

Hi , I bought the HRM Dual few months ago and now I am experiencing sudden disconnection during running. I changed the battery but the problem still exist. It happened recently for a few times which I found it annoying. Here are some pictures of it.

0 eezytiger over 2 years ago

I have no answers, but it seems strange that the dropout always occurs at around the nine minute mark. Can that be coincidence or do you do something or reach a location always at nine minutes that could affect the connection? Any strong RF sources at nine minutes, for example, or do you bend down to tighten laces, remove a warmup jacket etc.?