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16 First steps
Table of contents
4.4 Enabling/disabling the keypad lock
The keypad lock deactivates all keys on the device. The timer function
of the device continues to function.
1
Slide the HOLD switch up into the HOLD position to lock the
keypad of the device.
X The lock symbol Z appears on the display.
2
Slide the HOLD switch down to the O position to disengage the
HOLD.
4.5 Accessories
4.5.1 Connecting the headphones
Warning
• Set the volume to a moderate level and do not use headphones
to listen for excessively long periods of time. Exposure to intense
sound can cause hearing damage. Observe the Hearing safety
instructions (see also chapter 1.1.2 Hearing protection, page
6).
1
Turn down the volume of the device before you plug in the
headphones.
2
Insert the stereo jack into the headphone connection EAR on the
top of the device.
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