keylorgj:
I need to turn on a LED and Buzzer in a helmet, but the ARDUINO can not stay in the helmet
Your post is incoherent but it may be possible to use the bluetooth module to do this without an Arduino. This would be by using the STATE pin and/or pins not normally used with Arduino. I believe an HC-05 would be a better choice for this, as it is more versatile.
I'm not sure why you have a problem with this, as there are Arduino chips that are smaller than an HC-06, and probably use less power.