Hi,
our main need is to create a dialogue via bluetooth, a device with a iPad2/3/4 or with a device equal.
data to be transmitted are the values detected by the sensor.
it is sufficient a BR of 38400 for transmission oe less.
we do not need to particular protocols.
our device is powered by a small battery, then the form must be BLE.
The maximum width of the module must be 12mm
we need PCB antenna.
Thanks
regards Marco Tirinato