can be your bullet points
Rf
Xbee
WiFi
Bluetooth
And try to make your doubt more understandable , how is the heart rate sensor ? Is it again connected to the other Arduino ? What is the purpose ? How much range and distance is required?
Please even post a full question.
And before posting Google such things they are easily there online
Range is 10-15m (Bluetooth connectivity, possibly)
Обсуждают сегодня