Controlling in-the-ear hearing aids
Some in-the-ear hearing aids have a small button to control them with.
You use this to select different programs. Programs are to help you hear well in different situations. Although most noise control is automated, it can help to have a special program for when you are in very noisy places, or when you watch TV. Programs are set by your hearing care professional when you have your hearing aids fitted.
To turn in-the-ear hearing aids on or off, you open the battery drawer, which disconnects the power.
For the larger in-the-ear hearing aids (In-The-Canal and bigger), you can control the hearing aids using a hearing aid app for iPhone and other smartphones.