AEL IR 4400, User Manual

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2. Attaching the head
Attach the selected head by screwing it in a clockwise motion onto the hand
piece until it has tightened into place. This is done by placing the head onto
the hand piece at the 10 o’clock position by lining up the notch and turning it
clockwise to the 12 o’clock position.
3. Operating the unit
Press the Green On / Off button for a few seconds. An audible beep will be
heard. The following appears on the screen:
The following screen appears:
Explanation:
Press UP to increase the digit, DOWN to decrease. Press ENTER to go to
the next screen. Hold ENTER for a few seconds to go back to the previous
digit.