The Helicopter SafetyCell amplifies the cell phone by an incredible 12db and uses the standard military (NATO Style) single plug interface.

The Helicopter Safetycell is amplified and will work either in or out of your craft.

This unit is powered by a 9V battery so you do not have to have your intercom turned on for it to work. If your batteries go dead, your radios and intercom stay alive.All the batteries do is drive the cellphone.