How to place a Motorola HS 850 bluetooth headset into paring mode:
- Close the boom to turn the unit off.
- Hold down the call button until the blue light comes on.
- While holding down the call button, swing the boom open.
- (Now you can let go of the call button.)
The headset is now in pairing mode, and you can search for it using your phone. When it asks for a PIN, use 0000.