I have a bit more of a dire need for this solution. I have a diabetic, non-verbal (autistic) son who wears a BT device attached to his stomach to constantly read his blood sugar levels. I need something that will receive that device's BT signal, and, boost it so that my phone by my bedside will receive the signal and wake me if his blood sugar gets too low or too high. Can anyone describe a simple, BUT RELIABLE, way to boost a BT signal for this scenario? The device on his person has no interface - it's like half an egg that attaches to his stomach and just transmits via BT which is received by my phone.
I have looked on the Internet and saw these referenced, but it is beyond my brain trust if these will do what I want. I have a Weber iGrill2 that uses BT to communicate with my phone. And yes, the range is very limited. Is there a device that allows me to extend the range of this BT iGrill2?